This is only true in one sense. Strickly middle of battle fighting. Yes, blieve it or not, intimidation. This can play a huge factor, if your opponant sees that you have mastered even purly visual aspects of your weapon it may cause some fear in thier abilities. Secondly as a distraction, moving in with one hand, want them to look at the other? give it a spin.. let the light reflect off and catch there eye, just long enough to land the other hand. I agree, these shouldnt be tought to "newbies" however, they could be semi-useful overall.