I see lots of ignorance in this thread regarding the topic of close range fighting. As this poster points out:
I forget the statistic, but i seem to remember that the vast majority of defensive shootings take place at 10 feet or less. Someone could VERY quickly close that gap and grab a gun.
It's far, far worse than that.
I can draw and fire very quickly. I'm well practiced. When faced with the situation in force on force with a modified Glock 17 loaded with Simunitions, I was unable to draw my openly carried gun before my hand was pinned to my holster. The gun felt like it was glued to the holster when the guy was coming at me.
Once the bad guy recognizes you have a gun, the conflict turns into a fight over that weapon. If you get knocked down, and the odds are it will happen if you're being charged and don't know the proper footwork, you have a really big problem on your hands. You have to protect the gun to maintain possession while fighting off punches, kicks, grabs and so forth. If there is a second attacker, they will be free to kick you once you are pinned. It will not go well for you if you don't know what to do (and even then it likely won't go well).
The actual solution to this problem is not a firearm, but combatives and good physical fitness. You have to know what you are doing or you will have a very, very bad day even in a one-on-one fight. Odds are his buddy is waiting to strike when there is an opening. A short, fixed blade knife on the belt can come in very handy, but you will have the same problem with deploying it. Such a draw needs to be integrated into the combatives you are using at the time.
Attend Craig Douglas' ECQC course for extreme details and practice on this subject.
www.shivworks.com