I don't like when he uses his hands because I worry about finger shaped bruises. I prefer he put his arm across my throat while he is taking me from behind. A bonus is he has a free arm to rub my clit as well.
I read once that it's not only just the chocking that increases orgasm and libido but also the release. When The air all comes rushing back into your body at once. I love and knew a couple guys that were into it too.