I had been looking around for a slimmer cover for summer use, when a full cover can be bulky in the pocket of a pair of shorts. This one fits the bill very well, it adds just a few millimetres to the size of the phone and provides reasonable protection, especially for the camera lens. It fits very snugly and leaves the screen almost fully exposed with hardly any edge intrusion onto the glass.
It has cut outs for the volume and power buttons, which is great because it protects them from inadvertent use, but allows use of them without the additional pressure required with a full cover. It also makes the phone easier to hold, the matt finish providing some friction when holding it. Only drawbacks are that the top and bottom ends of the phone are not protected, so care should be taken not to drop the phone onto hard surfaces. One advantage is that being mesh it allows the phone to run cool, not that mine has become overly hot, but it can warm up a little in the hand if you run the dual processors at top rate with a full cover on.
My only criticsm is that after a few months use the nice feeling matt finish is wearing off the corners, I bought a black cover and it just exposes slightly shinier black material under the coating, so it's not really a problem and doesn't detract from the visual look of the cover. I can't comment from first hand experience on other colours, though I expect the cover material is coloured all the way through as my black one is.
An update after around 6 months use:-
After a few minor drops onto softish surfaces one of the corners of the cover broke off. This is largely cosmetic, but it suggests the material it's made from is a bit more brittle than I would have expected, it saved the phone but now leaves that corner unprotected. So if you're looking for great protection, this is probably not going to be ideal.