GED has posted it in places here on OSA as have I and others "2 is one, 1 is none!!!!!". Two guns, two knives. As for stabbing, unless you have no choice, slashing is the prefered method, an I would suggest you learn some anatomy, as to muscle structure, arterial areas of the body, and such. Once learned and practiced, you can put a BG down rather quick with a couple of good slash's. This is where serrated blades like the Spyderco really shine's. Stay away from the chest area, and concentrate your efforts on the arms, and legs. I would suggest reading "Kill or get Killed" by Rex Applegate. Its all about doing the down and dirty to your opponent.