[EdZ]

Since there are two 'connections' our body has to provide leverage, there are simply two areas to focus 'feel'

in the feet (pivot control)
in the hands (hands control)

at root these represent the 'ends of the lever' which we have control over. IMO pivot control, in an 'ideal' application would be the ultimate machine, however to surrender to the motion to the degree required, without the ability to 'adjust' that the hands have, makes this much more difficult to do. You must have a pure swinging motion and perfect balance.

The hands offer the advantage, because they are farther along the 'chain', and thus the mind, which is amazing at adjustments if allowed, can recover from less than ideal swings before impact.

Personally, I think that the feel should be developed in both with the goal of balance between them, however for the reasons above, there will always be an advantage to hands control.