It seems like a LOT of money for something so minor. If you were doing a lot of drag racing I could see it but not for 99% of the riders. In my opinion I don't think you'd gain much time over just clutchless shifting or even a very fast, short blip of the clutch. I think you could make up more ground in a drag race just by practicing and getting a really good, fast launch which seems to be one of the hardest parts of a sport bike. I've had years of drag racing cars and at least with them the first 60' is where most races are won unless you just have a really mismatched pair of vehicles and one just over powers the other. I think it would be a lot better piece if it was ~$50 or so.
Now a slipper clutch on the other hand can be worth it's weight in gold. I wonder if one out of an R1 would fit our bikes?
I had an air shifter on a 79 Kawasaki Z1 with a 1480 big bore kit and nitrous. Is this the same. Sorry, that was many many years ago and I have been out of bikes for a while..