It kind of depends on how much work it would be. Like I had a comic where it just wasn't working because it was drawn in px and not vector, with the intention to print in black and white. So, it was just really fuzzy, took a long time to redraw a lot of things after they were sized up for scroll, and in the end it was like--I'm spending as much time making this vertical as it was to make the pages in the first place. So, I scrapped the vertical version and decided that I'll do vertical with other comics meant to be vertical. For me that was a really good choice, because I like to get more abstract with my paneling, and I can do looooong long shots with vertical that breathe so nicely, because they were meant to be vertical from the beginning.
Also, it meant I could finish one project and move onto the next because I wasn't spending altogether like 50+ hours making my comic vertical. Unless your project is taking off, or unless you really are attached to it, and unless you personally want to see it in vertical format, I don't see a reason to devote the time. It would just be another reason you're not finishing your comic.
BUT, and this is a big but--if it doesn't take that long to do, then go for it. Some people just put down panels in vertical so it stacks one panel by one and that's...it...and that works for their audience. Probably only takes like 40 minutes an episode that way because at that point you're just setting font.