Haha
Lol, Weapons are lame. Lets picture this, someone's broke into your house.
They havnt seen you yet, you dive on them from behind, there face down, can't do f**k all with a knife if their face down, get the knife out there hands then proceed from there with fists and forhead
However, if your in a situation where there in front of you, say 6ft away, their obviously gonna' make the first move cause they've broke in your house, most house robbers are amatuers with a knife, when they swing for you, grab their hand, boot to the bollocks....I'll let you decide how it goes.