you can find extended batteries at ebay for a lot less-i got ext. batteries for a i8910 for 13 USD-two months ago-works great
Too ugly. I hope that HTC will come up with a more reasonable extended battery like 1600 mAh.
11mm suddenly becomes at least double the thickness (22mm+) by looking at the photo.
This will just be too thick to put in your pockets without looking like you have to two ...