[cometgolfer]

My thinking would be that assuming one has a properly educated set of hands . . . may be a Plane Shift can be a good thing. If you know that you are gonna be "under" everytime, things would be a bit easier to predict. You could be more "under" sometimes but at least you know it's some degree of "under" EVERYTIME.

This is all assuming effective Clubface control via apporpriate Hinge Action.

Exactly. I know that I'm going to be "under" some 99% of the time (verrrrry rarely do I get "over"), so there's predictability in that part of the downswing motion. My hands have gotten much more educated over the last couple of years which is key as you stated. Over-acceleration and/or "adding" are my primary concerns now. If you're a swinger I think even if you're "under" it some, as long as you don't interfere with CF (and you have rhythm), your result will be "negotiable".