[BerntR]

No.. The LAFW rotates on one of three associated Planes. Horizontal, Vertical or Angled.

Different words, and your way of saying this is perhaps more in line with TGM. But the point is that the LAFW is vertical to the swing plane at low point and parallel to the inclined plane somewhere in the upstroke. And the Hand club is supposed to be on plane at all times. At least for a swinger.

Nevertheless it's the rotation of arm and club on plane that matters when we discuss RPM and MPH.