knowing how to use the tool and proper training is everything. with the proper training anything can be a weapon.
but when it comes to weapons like this, pens, knives, clubs, etc... hand to hand is a brutal, exhausting, violent situation to be in., my biggest problem with ppl who "sell" this kind of info / product, is that they don't stress enough the "mindset" required for this type of encounter. ..without the training all these tools are useless, without the proper "mindset", you are also at a disadvantage and are now playing catch up. when engaged in hand to hand you have to go from being the prey to being the predator in a split second...not many ppl have that ability without extensive training, hand to hand is not what you want, that's why its so important to always be aware of your surroundings and environment.