I'm hired to do storyboard and lineart in a comic, it's pretty common for comic jobs to be seperate with a main artist (who does the lineart, sometimes with solid black shading included) and a colourist who does all the colours.
That said, art is a very competitive industry and different jobs demand different specialities, so being a generally good all-rounder can open those first few doors until you find your niche. Comics for example demands consistent quality at speed, even if the level isn't the best, whereas illustration commissions usually requires more work on details and single-image composition. 2D animation is usually really fractured too, with up to ten different jobs for a single frame to speed up the whole process.