I saw a mini review in T3 and they had a guitar constructed like and airplane wing, kind of like an acoustic as it is hollow with braces for strength, one of the ones on the main page looked a bit transparent too.
My initial impression was there would be no sustain, or it would feed back like crazy when you went near any form of gain, I think there are clips on the site but my interent is a bit funky at the moment.
The site is:
http://www.rksguitars.com/, what do you think, kinda crazy eh? Not sure if I'd buy one though.