I think the book is great and has a very accurate guitar tab reproduction of the album.
I found only two little "downsides":
1. In the songs "Lovers in Japan" and "The escapist" the chord boxes at the beginning of the songs are missing (but in fact it's not a problem because in the first case the chords are standard and very simple and in the second case you can use the boxes of "Life in technicolor" that has almost the same chords);
2. In the song "42" the book tells you to tune guitar nr. 2 and 3 in a difficult and not very common way (I think that maybe they would have reached almost the same result with tuning down both E to D and adding a capo at 3rd fret).
Anyway if you like "Viva la Vida" then you should buy this book, it's a great piece of work.
- (Bolzano, Italy)