Just finished this book as multiple copies were available from my local library.
In general, I found it a worthwhile read. I like Glock's products but after reading the book, not so much the man nor the people he surrounds himself with. Also interesting but not surprising is how often the G22 is mentioned since Glock's largest market is U.S. law enforcement.
Noticed author (Barrett) is a forum member and has a devoted web site