Just remember that about half of all of the undercover shootings I have read include at least one bad guy that was shot in the head multiple times, becuase the bullets deflected off the skull. Even .357 mags. An unarmed/blade response is more or less what I am talking about. I know how good blades can be up front, and I know what I can do with them. There is an old thing in European martial arts that your arm is worth less than your life in a clench.