OK, 
In a couple of threads, I've seen people arguing about weapons and their usage, with all parties making statements that fly completely in the face of reality...

"Reality?" you say, "What do you know about reality, Eric The Mad?" A good question. My answer is being a member of the Society of Creative Anachronism and a authorized fighter (admittedly off and on) since '88. I also have fought in Amtgard and sparred with people from various other LARP and Historical Re-inactment groups. I do NOT claim I am a great warrior in RL. In fact, I rather suck.  
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But what I do offer is that I have worn the armor, have swung weapons (or their various replacements, depending on the group) at other people who have been trying to do unto me at the same time. Plus, I am a History major. 

If I haven't done it, I have sources and contacts who may have. If that doesn't answer your question, I will happily research the matter for you., cheerfully share my findings, as well as point you in the right direction to let you draw your own conclusions.

I do not claim to be infallible. I have little to zero experience with various oriental martial arts styles and techniques. But again, I have sources who may know the answer to your question. If you don't like or disagree with my findings and answers, I won't tell you are wrong to rule differently in your game.