I would say that overall, I liked this book. It started out well, really funny and off-kilter in a Matt Ruff kind of way. The set up is hilarious, and it is not one of those books that takes its sweet time getting where it wants to go. After reading so much Dan Simmons (Hyperion, Fall of Hyperion, Endymion), I can really appreciate that in an author.
I seem to keep coming back to the light and fluffy in my reading materials and the accompaying descriptions, and this qualifies as that definitely. Note: not recommended for those who might be overly dismayed by a main character demon whose main purpose seems to be eating people in three bites, starting at the head. The subtitle of this is "A Comedy of Horrors" for a reason.