I have the book. I really appreciate it, because I have a cousin who is very dear to me that was raised in the JW faith; and this book gives an insiders view of their religion, and more importantly, their culture. My cousin is now agnostic with pagan leanings and very antithetical towards organized religion. I bought the book because I want to better understand the experiences that embittered him so.
The book, I believe, is actually fiction, Nicholas and George both being somewhat autobiograhical characters. I think It's a good book to help an Orthodox understand JW society, but I'm not sure it can be used the other way around.