I like the cover, it feels nice (lack of friction on the back is an annoying problem of the Samsung Galaxy S) and was pretty easy to put on. Has handles on the top side for easy removal, a feature lacking in most cases of this kind (eg. crystal cases). Wish the cover itself was built out of aluminum, rather than plastic with the back cover having an aluminum plate on it.
Also, while it has more friction than the SGS has by default, I wish the sides were less slippery.
The holes for the volume and power buttons make it easy to use the buttons without holding the phone (for example, while in the pocket), and reduce the likelihood of accidental pressing.
To sum up:
+ Feels nice
+ Increases friction
+ Makes buttons less prone to accidental pressing
+ Protects significant parts of the phone from drop damage
+ Handles for easy removal
- Not built from aluminum, but rather plastic covered by aluminum. While this is advertised by LITB, I would've preferred a completely metal build.
- Slightly slippery sides. Better than default SGS, though.