I bought one of these before even seeing this thread. The case are surprisingly well made and look really cool. The only issue is that the cases are thick and relatively heavy. After a few days of use, I ended up taking it off because it made the phone thicker and felt uncomfortable in my pocket.
If you want something to express yourself and don't mind the phone getting thicker and a little heavier, then definitely give these a try.
(I'd prefer a skin though, but I can't find any for this phone!