Yeah I was curious because I think it's both as well. As Hoglahoo said he actually seen it as a trick in a parlor which I read that people have done that. I agree it can be a useful tool if you use the same exact hair from the same person, but then again I also read and I agree with this too is that small serrations in a blade actually pass the hanging hair test easier that a smooth shaver. So I guess it's all what you're used to but I still think its both a trick but can be a useful tool with the right circumstances. Keep voting guys!