I found this book troubling in that it challenged my expectations of an Alan Moore work. This is almost free form literary jazz over the life of Steve Moore. The photography is top notch excellent. The story is winding and unconstrained with only really the final few pages settling back down into a typical narrative - and even that narration is decidedly unsettling.
This is something I had to read twice: once I read it thinking I was reading the usual unusual Alan Moore work, and that reading was failing me (or I it). Then I went back to it trying to feel the rhythms, to experience it rather than to "read" it, and I liked it a lot more. I've heard parts of Alan's musical version of this book: I feel like the two together would make for an excellent experience.
It's an extremely interesting piece. I don't think it's for everyone, but is marvelously well done.
FWIW: I bought this in the Oversized Hardcover edition: while it was gigantic, I would believe that that the paperback normal sized version would do a huge disservice to this piece. If you want this, spend the extra ducats and get the oversized hardcover edition.