Went to the T-Mobile store on 34st street in Manhattan and they had them. I dropped $35 on one, and installed it last night. Besides the fact that I screwed up the installation slightly, it really is a nice screen guard. Definitely can see the thickness of it if you look at it on an angle.
I will say, you will notice some smudges when your phone is off, easily cleaned with a soft cloth (they include one), when the phone is on, it's really clear, you won't notice the smudges at all, looks great. Also, I didn't notice any loss in screen sensitivity, swiping, touching, pinch to zoom etc, all work perfectly. Install is easy, they also include a squeegie like card to get rid of the bubbles, BUT, the bubbles disappear pretty easily and quickly, and there really isn't many that I had to get rid of.
Also, the screen guard doesn't go to the complete edges of the phone, so obviously they had cases in mind when they made it. I have the Tech21 Impact Shell Case (black), and I feel completely comfortable with the combo of that case and the Impactshield screen guard. I am not worried about an accidental drop. I still have my other screen guard in transit, should get here today or tomorrow.