Went to the AT&T store and plopped the $80 for it.
So far I give it a B-.
Case itself seems to charge fairly quickly, charges the phone almost as fast as a regular charger.
Really like the feel of it. I'm not much for rubber cases but this one has changed my outlook. I got my wife a Juice case for her iPhone 4 and the PowerSkin blows it away as far as feel and weight.
My only real complaint is that when its plugged into a computer it only charges. No USB debugging or Kies.
Other than that I'm satisfied so far.