Yoda - you wrote-: "an orbiting Sweetspot is indifferent to the alignment of the Clubhead's sole (however long) at Impact."
I agree with you. That's why swinging a golf club using your orbiting sweetspot model would not work that well with a clubhead width >4" where the clubhead sole is non-cambered. By contrast, the Anthony Kim swing model would work equally well with non-cambered soles and his swing model doesn't incorporate any "steering" actions. According to that AK swing model a golfer must generate a perfectly symmetrical swing where the clubshaft decends "on plane" from the TSP at the end-backswing to the elbow plane by the 3rd parallel, remains on the elbow plane from the 3rd parallel to the 4th parallel (as if it were running along the surface of a plane board inclined at an elbow plane angle), and then ascends gradually to the TSP again as the clubshaft moves "on plane" from the 4th parallel to a finish point on the TSP - as exemplified by Tiger Woods in these next photos.
If one swings in a perfectly symmetrical like Anthony Kim, and remains on the elbow plane through the entire impact zone between the 3rd and 4th parallel positions, then there is no "steering" actions occurring between the 3rd and 4th parallel positions. The clubhead arc will be perfectly symmetrical below waist level because the clubshaft simply travels on the surface of an imaginary plane that is inclined at the same plane angle as the elbow plane.
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