I don't have the book myself but a friend at the club does so I've read it through and it's a beautiful book with some interesting rules. I don't think it's worth £70 though but the price is the only negative thing I have to say about it.
Would've like more internal illustrations. most of the internal art is FW minis arranged and given the B+W photo treatment which is cool the first 5 times you see it. Page 237 with photo number 189, you've seen enough