My proof came, and it feels pretty damn fine to hold it. I think I'm going to swap out the cover (it's okay, but I think I can do one better). Otherwise, pretty nice.
One question for previous users of lulu, though:
The margins and gutters on the book... They aren't quite consistent from page to page; pages shift towards or away from center maybe an eighth of an inch from page to page. At no point does this run the text any closer to the edge or gutter than I'm okay with, or "ruin" the book, but it did strike me as not-quite-perfect.
Is that usual?