I have one on my phone now. So far so good.
Edit: This case makes sense for me as I typically carry my license, Costco card, insurance, bank/credit card and a picture of my wife. With all of that in it, still stays somewhat reasonable. It's still thinner than my previous front-pocket wallet +iPhone with case (Griffin Reveal).
Also, the cutout for the camera is nice as it doesn't cause flashback from the flash in images.
The stores I went to (both near Dallas/Fort Worth, Texas) had plenty in stock.