Haha, absolutely. I only have his book on hands, but it's been very helpful for me over the years. His stylization never really bothered me, I actually found the exaggerated knuckles, tendons, and bones to be very helpful. I think the main thing for me is that his hands are so full of character and motion; they're actually fun to look at and draw...
yeah i have Dynamic Anatomy and Dynamic Wrinkles and Drapery. i'd debated on getting them for awhile, but just reffing from photos wasn't doing me a bit of good. i like that he makes nearly every muscle visible, so you can alter according to your own discretion. for me it's a pain to buff up a photo of a skinny guy verses thinning down a buff guy. idk, just my preference
he has another, called Dynamic Heads, have you seen it?
Ahh yeah, I've seen those books before... I don't have them though, just the book on hands. Yeah, sometimes just reffing from photos isn't the way to go... all you're learning is how something looks in one situation, not learning how or why things look the way they do. It's one thing to look at pictures of clothed people and draw them, it's another thing to be told "wrinkles and folds for xxx fabric act in xxx ways"... so you actually understand what you're doing instead of just copying.
I've actually never seen the heads book... sounds like something to look into later! ;D