You've got to let the meth head within about 10'-15' for that to happen. I'd question that judgement. A police study showed that a knife wielding assailant can close a 20' space and stab within 1.5 seconds. That's faster than most can draw and fire from an exposed holster. Now try doing that from a concealed holster. Same goes for pepper spray or bear spray in one of those nylon "holsters" that are sold. Bottom line is be aware of your surroundings because if an assailant, human or otherwise, gets within 20-30 feet of you your choices are very limited and not at all good.