I shave every day with a straight razor and have never used the hanging hair test per se. There, I said it, and by that admission have emerged from the depths of my closet. Many will think lesser of me, I know, but that's ok; I'm free now. Does that make me homogenous? I don't know, but I do admit to using lather and leather FWTW.

I do know that as my hair falls out some strands will often pause briefly to hang from my eyebrows. Does that count?