Be sure to post up a review of the Karakorums. I'd like to get my hands on the set up, but I doubt I'll do it this year. Maybe I'll get a chance to demo of them. They look very promising. The mechanical route was tried before with Burton and was a failure. The elegance of the Voile design has always been it's simplicity. Yet, it really does look like the Karakorum guys have addressed the problems that the Burton system had. There system actually looks quite simple and has some good looking advantages. Wear and tear look to be the big questions with it, not performance.
You can demo mine cause Ill definitely be doing some CO trips this year