[SECGolf]

Nice one Mike.I didn't have time to get into detail earlier but you summed it up in your own inimitable way -LAG is LAG ...Weight is - Weight

Here is where my fog is: (not saying I'm right,etc but better than saying "I think" or "in my opinion" every sentence).

From dictionary.com:
weight: Physics. the force that gravitation exerts upon a body, equal to the mass of the body times the local acceleration of gravity.

So in physics weight is force, or pressure that can be sensed.

Kelley does describe club head lag pressure as a careful nursing of clubhead feel. The main thing that comes from lag pressure is the ability to feel the club head. I'm not sure how to reconcile club head lag pressure (strict definition) with the force that gravitation exerts upon the clubhead (at top).
Regardless, both "situations" produce force which the hands most certainly can feel. The hands now have club head feel. Then they do what is needed not to lose the sensed pressure (clubhead lag pressure is "always loading" - feel the wet mop head through impact). Including telling the body to make the necessary movements not to lose club head feel.