I bought a Kindle copy earlier in the afternoon. Had a rather slack working day so am already quite a way in - very enjoyable. Have been one or two asides or small comments I haven't agreed with, but it's very well written and the author is very fair, I think.
You can tell he's a Mackem, though (or, at least, his Twitter feed strongly suggests that). ;) He works in quite a few mentions of Sunderland, though, but to give him his due it hasn't grated or seemed gratuitous; they've been through a lot of similar things we did in this period, while some of the notable players in the story served both clubs.