I received my case and am definitely liking it so far, despite a couple of minor imperfections. I'll post a review this weekend, when I have the time to sit down and write one up. All in all, I give the case 8.5/10.
The rubber is hard, not the grippy kind. It doesn't trap dirt at all. The case is far superior to the CruzerLite TPU case that I've been using previously.
I agree, the design of the roll-on screen protector is absolutely genius. However, $25 is a bit too hefty.
Samsung Galaxy S4 Google Edition
Samsung Galaxy S III SGH-I747 (for sale)
Samsung Galaxy Nexus (sold)
HTC Sensation (sold)
MyTouch 4G (sold)
Samsung Lemon [Vibrant] (sold)
HTC G1 (retired - kept for nostalgia purposes)
Nexus 10 (16 GB)