Definitely get the sweaty palms sometimes (esp. the last coupla flights, back in the air after a long time, crosswinds, etc. Pre-landing checklist: carb heat, power back, flaps, wipe palms on shirt, ...), but never had a problem with the ol' death-grip.
I'd already read so much about flying before starting lessons that I was always very conscious of trying to use the "fingertip" approach... and it definitely works better than the tight grip.
It's like Bob Hoover once said: "You can get an airplane to do almost anything you want it to- if you're gentle". I'm glad I read that bit of wisdom before I ever grabbed the controls of an airplane.
I do remember once during my training, I think it'd been a while between lessons- I heard this loud, weird noise in the headset as I was climbing out after takeoff, and realized it was my breathing. I was nearly hyperventilating, thru my nose, right into the mic....sounded like a dirty phone call... LOL. I'm surprised the CFI didn't say anything...
