Again thanks for giving us a report on your findings.
I would also be curious about the longevity of edges prepared this way.
A comment on Murry's videos. He goes to great length in the rebuttal video describing how a hanging stop rounds the edge, but when watching the shaving video I felt that at quite a few times he was shaving at very high shave angles, and not just under the nose (90 degrees at one point on the jowl). IME high shave angles round the edge on a micro level. This is why new shavers dull their blades so much faster than experienced shavers. I think that Murry has the habit of high shave angles from all of his trick shaving with inappropriate tools which have obtuse bevel angles and require high angles to shave.