Well I have to reply to this. But from what I've read and heard it is bad to leave your hand on the shifter (manual) because it prevents the vibration and causes faster clutch wear.

In my subaru manual it says not to leave your hand on the shifter. In my subaru my hand was on the wheel where it should be.

In my new X (auto) I drive with both hands on the wheel.

I would check the manual to see what it says about leaving your hand on teh shifter.