Ah, but the idea is more that it's a considerable improvement for honing, while not actually making a difference in use because your hand is an infinitely more complex and adaptable piece of evolution/design than a single pivot on a razor. The payoff really for me is storage and travel (ha!), but then as I said - kamisori get designed with fixed handles... so perhaps it's saya time!

(Also the picture of my hand was to illustrate a point - you don't actually hold a knife with a hammer grip either.)