Full clutch disengagement befire shifting?

Yea, you can do it without changing gears, it's easy. You just gotta know what rpm to match. It's way slower to shift this way, but it's fun to show your friends that don't know any better. =)

If you shift fast enough, even if it "grinds" a little bit, you may not even hear it depending on your exhaust and other loud sounds. I can feel second grind a little every now and then if I am power shifting (not very often though).