Been using this for about three weeks now, a breakdown on my thoughts in this time...
Build quality: it comes as a two piece item. An internal plastic cage with a clear screen protector holds the iPad, and a thick rubber shell fits very snuggly around this. It has been designed to fit together very well. I do take the claims on water, sand and wind with a pinch of salt, but I would say that I am a lot less worried about damaging it now.
Access to buttons: there are flaps to the various sockets and these are easy enough to open. I am not 100% sure on the one for the mic at the top, as it seems a little flimsy compared to the others. However, the buttons for volume, sleep and menu have been engineered very well indeed. In fact, altering the volume is much easier than without the case on. The front camera is permanently available, and the rear one has a flap you need to hold back if you want to take a shot (but as the weakest feature of the iPad, it's only good for videos). One big drawback for me is that although you can get the standard dock connector on fine, you cannot get the camera connector kit on without dismantling the whole thing. A right royal pain as I use this quite regularly.
Look and feel: ok, so you can get rid of the "look at my ipad2, isn't it slim and light" attitude with this. However, you can replace it with a "look this bad beast" smugness. It looks secure, it looks safe, and, in my opinion, it looks kind of cool in a rugged way. The rubber feels great and grippy, it's textured well with a soft, tactile surface.
Screen protector: I like the idea of a screen protector, but it was a bit `squeaky' when using the device, and it seemed to offer some resistance. I had read on one review that it could scratch easily. Looking at the material I could well believe that. My laughable solution? I cut down a regular screen protector and put this on top! So now I have a screen protector, the case's screen protector and another screen protector. Is my mild autism showing now?
Stand: it also comes with a clip on stand that attaches to the sides when in portrait mode (and so top/bottom) in landscape. A useful extra. It's not the most well-engineered piece of plastic I have ever seen, but it does what is needed and grips very well. It gives a good angle for typing as well as a more vertical one for resting/viewing on a desk or similar flat surface.
Price: it is in the range of what seem higher-quality cases. I treat this as part damage insurance, so don't mind the extra premium if it saves the device from destruction.
Summary: as a protective case, this does exactly what is needed. It has combined sturdiness with a terrific design. I feel that I can put this down anywhere, in any bag and even out and about in dodgy weather. I am less worried now.
For a mobile device, protection is what I wanted. 9/10 (1 off for the camera connector issue)