I predict that this thread will die in an acrimonious verbal shootout within a few pages...
In as much as everyone will quote sources, research, statistics, probability, celebrity instructors, elite units, probabilities, J-frame revolver vs high capacity semi-autos, antecdotes, war stories, Israeli military prowess, astrological signs, Glock vs. Everything Else, Tueller Drills, North Hollywood Shootout, FBI Miami Shootout, Iraq, NY SOP 9, Fackler, Marshall & Sanow, SA vs. DA, ADs/NDs, lack of training, carry while in the shower, ad nauseum...
I'll simply recommend carrying an unloaded .22 LR Davis Derringer (and extensive practice of my favorite gunfighter's SOP drill for danger).
YMMV
