I'm not sure what oso diablo is referring to by "gobbledy" but I thought it was brilliant. Yes, the narrative fractures toward the end, but I think that's intentional based on what Wray is trying to convey. It's a very well written book with very interesting characters and several good plot twists. This is the first from Wray that I've read, but I'll be looking for more.
The blurb on the back of my copy references "Faulkner, Morrison and Poe" - I can't disagree with this as Wray evokes each at various stages (and for the record, the Morrison being referred to is not the Lizard King; at least I don't think so

).