Re: Does clutchless shifting damage the transmission?
Two cents+: I've done constant clutchless upshifting, and occasional clutchless downshifting with my 929. I've done it at full throttle, max rpm for more than 65 track days. I do not have any problem whatsoever with the transmission. It still shifts clean and easy. Nothing is bent. Nothing is giving any signs of being worn at all. It still shifts like new, in fact, a little better than when it was new if anything. I still own the bike, and it shifts and runs great.
You must be careful and not force it into the next gear. A little pressure (maybe a few ounces) on the lever to preload, then a quick tiny blip, and it pops into the next gear. If you put a lot of force behind the lever, there is some potential for harm, but if you just preload it, and let it snick in, it should cause no problems. Drag racers do it all the time, because it is quicker. I've done it on every street bike I've had without any transmission problems ever. Air shifters coordinate the movement of the lever with a blip of the throttle, no clutch. Those don't usually cause any transmission problems either. When you do it yourself, you are just doing the same thing as an air shifter.