I definitely do batch style and knock out like 10-15 pages at a time. I'll usually pick one scene that has the same setting or lighting and do those all together to ensure the lighting and colors are the same.
I do mixed 
The traditional part I do batch. I draw the whole chaper, than line the pages. Sometimes when I have difficulties with a panel or page, I work on easier pages. Than I go back to these parts with more determination.
At coloring I do the pages one by one, so I can upload the finished pages. This way I can note my readers that I am alive, and I am working on the comic.
I've done various degrees of batching and it does often help my speed. I started out doing just a page at a time and then switched to doing 4-6 page batches for a while. But as I've gone on and started spending more time and effort in certain areas, I need to do shorter batches so I'm not working on the same step for too long at a time. Spending multiple days in a row doing the steps that are harder for me, like shading, tends to burn me out. Nowadays I usually will do my layouts for most/all of a scene as a batch, but after that work on finishing the pages in batches of two. I think it's maybe slowed me down a little, but it does let me focus on the specific pacing of each two page update, so that's nice.
I do a mix. I sketch out the entire chapter first and then line and colour section by section. I don't know how much time it actually saves, but it feels like it saves time and having the entire chapter sketched gives me a lot better chance at editing properly but given how doing the lines kills me I definitely couldn't stand doing an entire chapter of lineart at a time.
I do things one page at a time since I don't really plan my comic, I make the story up as I go.
I'm quite indecisive with the story so doing things by batch is difficult for me as I always end up changing my mind about where the narrative goes lol
I also do kind of a mix. Also traditional artist, working with ink and Markers. The sketch-lines I do pretty much, whenever I like (mostly, when I should go to bed x,D ). The rest I do as batches à 4-6 Pages (mostly who are in the same color-sceme). This especially helps when coloring, as I have the right markers directly in my hand and don't have to change them every-time. Like, when I'm doing my charas hair I have the correct tones in my left hand and then draw the hair in all of the prepared pages. This safed me alot of time. Also I don't have to remember, which of my x-brown tones I used for this random background-object nobody cares about anyways...
The other good thing I figured out: I have to finalice every page of the badge. For example: before that, I was sometimes stuck in doing mini-corrections, wait as I didn't feel comfortable etc. Now it kinda forces me to get my butt up and finish it xD
But in the end it depends on every artist itself. I haven't done my pages batchwise until very recent and for me, it works out.
Having tried both, I personally prefer the batch method. I'm definitely in the group that finds myself working somewhat faster/more efficiently that way! I only ended up reverting back to page by page for my previous comic towrds the end because I burned through my buffer and didn't have time to both complete batches and meet my weekly deadlines lol. That said it was a mistake on my part not to just take a break and rebuild a buffer to the point where I could do batches again 
Live and learn, I suppose.
I wish I could do batches, but it just doesn't suit my style, so one page at a time it is. I constantly change my mind on the composition, dialogue and flow of the pages that if I had ten pages inked I'd have to redo some of them.
I always have rough sketches of a chapter ready but allow the pages room to live. If I get a new idea or something else seems better than what I have on the sketch, I can easily change it.
I prefer one page\panel at a time. It's a little slower, but I like to get it all done so I don't have to go back.
Wow I really love your art. (: Gunna have to take a read of Magicians of Megatron when I get home from work!
Oh wow, its pretty interesting hearing all of these different approaches and perspectives here! I might try a mixed approach if the 'classic' batch work doesn't go so well for me.
I do mixed =) I sketch a few pages, and when I have had enough of sketching (mainly around 3-5 pages) I start inking. While inking, I usually do 2-3 at the same time (the ink has to dry #traditionalartist XD) and when I'm bored of inking, I sketch again or do the screentones digitally =P
...Basically my workflow is complete and utter chaos °_°"""
i used to post only one page per episode but the readers complained and wanted more so now i do about 20-30 per post 
its ok though, it moves the story along quite nicely
So far, I've been working on my comic one page at a time. Although seeing as how some people say that they get their pages done faster when doing them in batches, maybe I should try it. 
Agreed hahaha, that's the main reason I decided to try it. It also seems like it'd be much better for uniformity and having a better planned story structure.
I tend to work in batches of 3. Well, I storyboard on paper first (4 pages per sheet, front&back),then when I move on to drawing in ClipStudio, I draw 3 of the pages and then work those until completion, rinse& repeat. I just recently adopted this method, before I would work on one page sketch to finish, set it to go up, and then start on the next.
I like the batch method more myself as I get to see more of a scene at once outside of my head, and can adjust as I go.
Em... Sorta one page at a time? I will script in batches (one chapter at a time), which means I MAY also do thumbnails (I should, but I usually get lazy and then pay for it when things don't add up). Then I work primarily on one page at a time, but I may leave that page if it's giving me issues and work on the next few pages, doing rough drafts and such. Usually that jogs my brain and I can go back to working on the main page.
It's A LOT less efficient of a workflow to do one page at a time, but, eh... I was working in batches and I ran out of steam because I didn't get the instant gratification of having something shiny and completed every couple weeks. x.x Also because my nerves and muscles are all borked up, I can only work in short bursts anyways, so there's no point in having a long workflow.
I tried batch style a while ago with my first webcomic, it didn't work too well for me since I kept getting frustrated that I wasn't finishing all of the pages in time for when I wanted to upload. Now that I know some more tricks and have a better idea of how to make comics, I started doing one page at a time, but worked my way up to two pages once I had a good buffer. So now it's a sorta flexible batch upload style (idk if that makes sense). It works for me. I feel comfortable knowing I only need to upload at least one page a week, but I can still do two or more pages if I wanna get through a scene quicker. This probably doesn't work as well for people who prefer to be more consistent with uploads, so that would explain why I don't see this option brought up much.