Bought this about a week or so ago. I like it as it adds more texture to the body of the phone so it's not so slippery, especially if you're using your head and shoulder to hold the phone to your ear. What I don't like is when you slide the keyboard out, the top row of keys are a bit crowded due to the cover. I have bigger fingers. Also, a lot of lent gets caught on it which I don't really care for, but it does fall off.. not like it's sticking.
There aren't alot of cases on the market yet. I was hoping to find a silicone gel case like they have for the iphone, but that is out of the question due to the slide keyboard. If you need to pull the battery, it's a royal pain in the butt as the case isn't very easy to get off.
All in all, it does what it's meant to- protect your phone, give you grip and durability.