So, after reading this I visited the local independent and sure enough they had several of the signed copies for sale. Most were signed "best" with the familiar doodle in the 'O' of Horns. There were two unique version (both of which I snagged): the first had an inscription in code "_... . ... _" and no doodle (haven't translated it yet) and the second was signed "warmly" but with a full face doodle of a devil head. I would post pics if I could, but I don't think I have the privileges yet.
While I was there, they also confirmed the details of Joe's Toronto visit. It's scheduled for Monday March 22, 7PM at the Merril Collection -- I don't think that's on his site yet. I'll definitely be there.