This looks really good. I would love to have one around. I do have to wonder tho, what's the battery life on it? Because you wouldn't be able to do a lot of swinging when your charging cable is that short.
I really like the design... the only thing I noticed against it is that the scabbard doesn't totally match where it connects with the hilt. The hilt has a circular part by the handle (for the large, green gem), while the scabbard in the connecting side is smaller and angular.