From what I've seen, it seems most of the creators on Tapastic do both their scripts and their art. In my experience, people who wear two hats like that tend to have a primary discipline. As in, they're either artists who needed a story or writers who needed art. There are some people who are natural visual storytellers, so neither has primacy, but (and, again, this is based only on my personal experiences) those people are few and far between.
So, where on the spectrum do you fall?
As a tangent, are there a lot of collabs on this site that I'm just not noticing for some reason?