I really like the look of this case. The frosted translucent effect means it manages to look neat but also still a bit geeky at the same time. :) In particular, it lets you see the on-board LEDs, which some other full enclosures don't.
The design of the case certainly wouldn't suit everyone. It only gives access to the main connections round the edge, so you can't get to the GPIO inside without disassembling it (and I doubt all of the case would survive disassembly -- see below!). The plastic is also very thick, and there's no significant ventilation, so any intensive processor activity could lead to some overheating problems.
Unfortunately, the built quality isn't really very good. The main pieces fit together moderately snugly, but the material seems quite brittle so I don't think it would survive any significant impact. Also, the clips to hold it together are much too fragile, and half of them broke while I was trying to push them into place. I strongly suspect that any attempt to disassemble the case now will break the remaining clips. It's easy enough to improvise something to replace them though, so that's not a complete showstopper. However, it's also important to note that the case really doesn't hold the Pi firmly, so it has a tendency to rattle around unless you've got all the cables connected. Since the case is very hard, I think too much rattling could eventually damage some of the components.
All things considered, I think this case might be OK for some people. If you only intend to use the Pi for simple programming tasks, and you don't need access to the internals or any protection from rough treatment, then you might be OK with it. I'd advise anybody else to look elsewhere though. Personally, I'm going to try to stick with it for the moment, but fully intend to replace it sometime in the future.