I'm 6'3", 225 lbs, size 11 foot.
What I find cramps my leg on a gear machine is when I move snow or dirt. With snow, clutch down, shift into gear, push snow with bucket, clutch down, shift into R to position, clutch down to stop, shift into first to get to where I dump, clutch up, move to dump location, clutch down to stop, dump, clutch down, shift to R, clutch up, back up, clutch down, shift into F, clutch up, repeat several hundred or a thousand times to clear a 600-800 ft driveway. Do this for an hour or so, then do the same thing for a neighbor. With deep snow, my left leg hardly ever stops going up and down. Talk about thigh burn ! When I got off the machine I could hardly walk. I did this for nearly 25 years.
Now I just gently rock my foot back and forth. I can run the machine all day without a single ache or pain.
I like the fact that I can make those wheels turn so slowly, that it's barely perceptible. I can drive up to a truck to dump with tremendous precision and not worry about hitting the truck.
And since the machine is designed to run like that, I'm not hurting a clutch disk nor worrying about wearing it out with slippage.
I will restate..... I will never have another gear again....hst is the only way to go.