Fergus Henderson comes across as a lovely soul in this book and I think that's quite important when he's trying to encourage the consumption of some fairly spooky food, you don't need some nippy sweetie making you feel like a hick if you balk at the notion.
Offal isn't so much a matter of taste as it is of texture and for people who haven't eaten offal I don't know how much this comes through.
My only criticism is the lack of additional info about offal, the different types of tripe and liver can't necessarily do the same recipe justice. I had a butcher insisting it WAS calf's liver, it was only 18 months old when it died. Aye maybe but it was well past pan searing/drizzling with fig balsamic, strictly gravy and onions.
A lovely book for those who have the guts (couldn't resist it) to try it out. Try a Chinese supermarket if you're looking for said guts, and if you find a butcher who'll play along, treasure him.