BerntR does the empirical data you allude to exist? That'd be very interesting.
Horizontal Hinging , Hogans little baseball bat, A.J Bonars closing clubface do seem very real to me, well given decades of field trials. Horizontal Hinging given Homers Alignments being the most precise the others though brilliant are somewhat open to interpretation, respectfully.
By the way does anybody have a copy of the Nick Seitz interview with Ben Hogan , Gold Digest 1980's? Id love to read exactly how he described the rolling face, the little bat.
The clubface is not a little bat, which implies the face is rotating around the hosel.