I've done the 32 day plan twice and have had great results both times. (Obviously the fact that I've done it more than once means I have not done well on the maintenance side of things, but that's a different issue).
My only complaint with this book is with the recipes (yes, it even includes ALL the recipes of what you're to eat), many of which include gloppy sauces made with corn starch (like the "Mandarin Chicken" -- yuck!). Generally, I would simply bake or grill the meat in those recipes, forget the sauce, and have a little extra fresh vegetable.
Be forewarned, though, that the "super-slow" exercises are HARD. But given that the workout only takes 20 to 30 minutes, and is only 3 times a week, most guys should be able to do this.
Good luck!