You're not Chuck Norris, if you have attackers in such numbers and with no fear of the 5 rounds in a J frame then you're probably SOL no matter what. Being able to spray a few extra rounds of 9mm down range isn't going to help you at that point. But in reality most people will never have to pull their EDC, the very small percentage that do will never have to fire a round, and the very small percentage of the very small percentage that do, typically fire around 3 rounds. Carry what you're comfortable with and don't worry about the what ifs and ya buts..