I actually regularly work in both. Majority of the work I do is digital, but there are some comics I work on that are just pen and paper. Sometimes I'll merge the two, like with comics, I may add in the word bubbles and text digitally to keep it looking clean since my penmanship isn't always the greatest.
Recently I've been trying to delve back into some traditional works. For me, the better I can understand things on a traditional basis, the better I can replicate and make it even better digitally.