I was in the LFS the other day, and they had just got 2 of these in, they weren't even priced yet, but they had one on their display nano and I was VERY impressed, it was actually really cool looking mounted on the tank, which you can't say for many lights! Here is a link to a place on the world weird web that is selling them. I think I might have to get one....
JBJ Viper Halide