From an Alex Fitch Panel Borders podcast interview with novelist Michael Chabon, and Matt Fraction who was still hanging around from earlier, we got an intriguing glimpse into a comic book guest spot. Here's a brief transcript
AF: (to Michael Chabon) If you find it painstaking to write comics, perhaps you could find a collaborator, like the other person we have on the phone right now?
MC: You know, I keep wanting to hit Matt up! Perhaps I should put him on the spot right now, 'cause I think it would be fun to do a… you know the "Tales of Asgard" stories they used to do in the back of Thor? I would like to do a little spin off story on Casanova, about some obscure, minor character.
MF: Done! We're in! It's all good. We need pages by Monday, is that okay?
MC: I'll get started right now! I'll get them back to you.
MF: I will be in touch, sir.