Yeah, I've been studying the constant-mesh transmission and see how clutchless upshifting works. I had no idea before that shifting could be so different from a car. I did come across a video in which a guy describes reducing throttle, pulling in the clutch, and upshifting simultaneously. I think that's what I started doing. I probably don't get the RPMs right because it isn't always smooth. That's why I've been adding clutch, just in case. I can't imagine downshifting this way though.
I guess I just need to spend more time feeling it out.