I've been working full digital for a few months.
In the beggining of End. I would sketch everything on A4, scan, and my friend would make the lineart on the computer, then I would make the tones and lettering digitally. After the first chapter, I think, I started to do End. all digitally.
I also do Delphinium digitally, but I use only FireAlpaca for sketching, sketching was my main problem, I am not good at aketching with CLip Studio, Photoshop or SAI, just FireAlpaca works for me. But backgrounds I do everything on Clip Studio, also lineart and panels. Then I fill the base colors on Fire Alpaca, their paint bucket is amazing, and gooo back to Clip Studio xD
This back and forth is not annoying as it may sound, and I use the best of each program =3 Paint bucket is great, but you need a very clean lineart for that, so you decide if you take longer on lineart or on painting, let's say.
Traditional lineart used to be easier, but then I discoveres Clip/Manga Stuido! And my life got better xD
Comic strips are all digitally, it is easier to ctrl+c ctrl+v.