I'm German, trust me i can drive with a clutch.
That's what I said.
But when you have a clutch that you're used to using with one leg, and switch to a clutch that you almost have to use both legs and get your body weight behind, it can rattle you. One of the parts of the test is holding the clutch in for 60secs, brake pedal too. As good as shape as I was in at the time, I still barely made it after training for it for a few months. Easier said than done.
Also, in the trucks I drive, it's ALL ABOUT RPM. You rev the motor to about 2k, and push the clutch in once, but then you have to let it out, push it back in and let it out once more, all the while taking the transmission out of gear and into another gear...before the motor drops 500rpm.
Again, far easier said than done. Nobody I know has been able to easily shift on his first 100 tries or so. If you can, I'd be surprised. I didn't. Nor did my trainer, nor did any of the trainers of any of my co-workers. It's something that in my company people literally brag about...
"Heck, I wasn't able to shift for weeks!!!"
You think it's easy once you do that...now ya gotta be able to use the splitter getting into 6th gear.