I've always used Zagg products ever since the first Iphone came out without any issues
Very strong and durable backed by a lifetime warranty (unsure if this is still the case)
As for rolling corners, you can flatten them down again with the liquid but either way, it seems they have considered this for the iPhone 5 protectors by NOT having them edge to edge
They also have a case friendly version which finishes even more short of the edge so that adding a case does not lift the protector up
For the first time, I am a bit miffed at spending £20 on it and not having it edge to edge but nevermind :- )