I'd like to think it's both. While my skills in both still need work (I swear, one day I will figure out how to draw hands that don't look like weird, broken spiders, or bundles of sausages!), I would say I have decent skills in both.
I think telling stories is a lot of fun, and I think drawing is a lot of fun - except when I have to draw those panels in which I, for some reason, have decided I really need to draw dozen different rooftops covered in rooftiles >.< - so I've worked hard on improving both.