It's great to see a fully gesture based phone. I've always thought this would be the most natural way to interact with a touch based device, and it's always the gesture based apps and interactions that I enjoy using most on my phone. My only hesitation is whether gestures interfere with normal use of the phone. Will it confuse interactions in the game I am playing with the swipe to go back to the home screen, for example? If it does, it's going to be hugely problematic. But if it's done well it will be the most enjoyable and natural interface out there, I think.