He finished the course twice!
But seriously, I had a friend who was a definite wheel-gun guy. Haven't spoken to him in a few years, since he moved to Idaho. But his EDC was a S&W J-Frame model. I don't remember exactly, but I think it was one of the 340 models; it had an enclosed hammer and the frame was a lightweight alloy, not steel. Since he carried .357 Magnum, he practiced with .357 Magnum.
One day at the range I joined him in shooting drills with his gun. I got used to the heavyish DA-only trigger pretty quickly and could put the first round at least somewhere near the POA, but trying to do quick follow-up shots was a disaster. I'd previously thought my Glock 27 wasn't a great gun for that purpose, but .357 Magnum out of the sub-2-inch barrel and a grip that let me get only the middle and ring fingers on it... After the first attempt at "quick" follow-up shots, I dropped back down to what would have been slow fire with my own semi-auto EDC. I shot about 30 rounds out of that J-Frame. That was enough to let me know what to expect if I had to use one in a "battlefield pick-up" situation. Did it make me consider buying one?
Let's just say that I went out and bought a new 1911 a couple of weeks after that.
So the "Triple Distinguished Expert" refers to the the different platforms/challenges?