Well, you sure got a lot of responses!
I doodled a little with my Nexus 7. It's obviously not pressure sensitive or anything, and I didn't really find a stylus I was a huge fan of. The only app I really used extensively was Sketchbook Pro, which is solid, but I don't know how it would fit into your workflow like that. You can export to PSDs and other formats with that program though. It's cool for the price.
Bookmarks