I have read it and did find it very interesting. I think the writting style was my kind of style.
The information in the book might be available elsewhere (here for example), but if you do not have access then I wouldn't know where to get so much info in one go.
The illustrations are nice (although some come from manufacturer's drawings).
I think it is a nice book to have as a compilation of high security locks. These locks are not covered in other lock picking books I have (I have not seen the visual guide to lock picking). If you follow the creed that the info is also available here or elsewhere then you wouldn't get any books at all...
I think you'll enjoy it like I did
(btw, I can't pick those locks, so this one is _really_ just for information as far as I am concerned).
L.