I have been shooting SA revolvers on and off for about 30 years. I have on occasion carried one for what ever reason, including protection.
If I were expecting a gunfight and couldn't avoid is, I'd want my AK and my S&W 9mm, but I don't hang around war zones.
IN MY OPINION, 5 shots in a large caliber revolver that the shooter can handle well is adequate, again, if the shooter does his part.
Spray and pray is not an option - cool, accurate fire is the answer.
Mark