this is interesting because it's sort of backwards in the independent photography world. it's great to be pretty good at a bunch of different stuff and probably much more rewarding, but in the professional sense you need to narrow down to something very specific and create your own niche. it's not like you can't make it, it's just easier to be successful doing specific work because when someone (company, marketing agency etc.) needs a photo of what your doing, they'll find you because your name will stick out as being the "best" or very good at those specific pictures, thus you get a better wage.
so that's my little bit. i'm sticking with photography. i suck at anything in photoshop that's not post picture production... joe can attest to that haha