Bart,

I like the way you're thinking here, but there's a problem. I have a hard time getting an edge to pass the HHT off the coticule, but the same edge will shave very well.

I do think that the toothy-ness of the edge has a big impact on the HHT. For me, test works best off my Belgian blue, medium barber hones, or the 8K Norton. It doesn't work well off the coticule, although these edges give me the smoothest shaves.

Maybe the very toothy-ness that makes a hair catch and cut cleanly also causes the razor to drag a bit when it's hitting hundreds of hairs at once. I'm not sure...

Also, I've tried the HHT with Feather AC blades, and they perform like a low-grit edge: the hair pops rather than slicing cleanly. Regular DE blades seem to cut the hair more smoothly.

Josh