I bought the Powerskin during the promo; got 20% off the $49.99 price. Overall, the quality is good, it adds a level of protection to the phone and gives it a little more to hold on to; yes, it add to the heft of the phone, but that's not a prob for me. I took it one step further and took a belt clip piece and using Permatex Black, stuck it on the back of the Powerskin so that I can now carry the phone in the Powerskin on my belt. Works fine, and the extra battery keeps me going all day without worry.
A highly recommended accessory IMHO
Steve Bonning, PA-C
CID and SIM unlocked
TESS Pride III WWE, but may vary as to day of week
Radio 220.127.116.11 but changes according to my whims
Retired: AT&T Tilt 8925, Cingular 8525
Using a custom ROM can cause your device to BRICK. USE ROMS RESPONSIBLY, (READ the WIKI and Upgrade Guides) BEWARE THE RISKS, BUT HAVE FUN!!