It covers well, stays put and you can hardly tell it's in there. It also makes the phone less 'slippery' so not so easy to drop!
There is slight screen sensitivity issues and some (but by no means all) responses do require a firmer tap, however it's not a big deal and I'd rather have the protection in place.
I would also agree with other comments that the screen image is not quite so clear, but again not a big deal, I've got used to it and I'd rather have the protection.
Overall, good protection for your phone.