I do not mean to offend but would not any style of knife, sword, head band, knife company made pen, etc. be 'devastating in the hands of someone who has training' is it use?

Given and equal amount of training, I do not believe it to be as effective as a bowie knife, tomahawk, baseball bat, or a broom stick. Then again, since I do not have extensive training in its offensive or defensive use, I guess I am just talking out of my butt. Though I would have to say that the Busse one, with an edge on both sides, seems to be much better then most.