I FOUND A VIDEO WHERE THE INSTRUCTOR SAID THE WOODEN TONFA COULD BE DANGEROUS SOON DO YOU THINK THIS MEANS A PLASTIC/ POLYCARBONATE TYPE OR STAINLESS STEEL TYPE WOULD MAKE A GOOD SUPERIORLY DANGEROUS DEVICE AGAINST A KNIFE if I have proper training to use it I mean could a stainless steel or polycarbonate/ plastic type be easily cut with a knife or would you be more concerned that I had the proper training in the use of the tonfa Rather than worry is about it being cut with a small knife ( I don't know how easy it is to cut or slash these things thoughts please thank you I mean do you think a stainless steel tonfa could be a good Alternative to a gun if properly used?