I know there's a few pro mechanics on this forum. I've heard a lot of varied opinions on clutchless shifting (and I'm talking street riding, not race bikes), I'd appreciate a real world answer based on a professional background. FWIW, I did it as a youngster and now I never do it. I'm not riding where every 0.1 seconds count, and I want my bike to last as long as possible.
I know some people have done it for many thousands of km, but what is unclear is if it's truly hard on the transmission or not.
Chime in, I'm curious to hear the REAL truth.