As a matter of interest does anyone know why hands are removed off the throttles at the V1 call? Someone once told me it was a symbolic gesture to prove that an abort was out of the question. I don't much care for symbolic gestures in flying - I prefer technical reasons. From the time I learned to fly in the Air Force it was drummed into me that one always kept one hand on the throttles including during take off and climb. Maybe the friction nuts weren't so good in those days....
Someone else came up with the theory that rotating with one hand caused a wing drop. Absolute balls to that one. Certainly I know of one 737 opertor that insists on the PF using both hands on the wheel for flare and landing. Not quite sure of the logic of that gem.