Back when many police departments were seguing from revolvers to auto pistols, various training officers would call me--I was editing Handguns magazine at the time--to discuss aspects of the matter. I would always ask them if their department had ever had a shootout where the extra firepower and quick reloading capabilities of the automatic would have been advantageous. Without fail, the answer was, "No, we haven't." If it were an issue, I would think that a "New York Reload" (back-up pistol) would be more useful, anyway. I think it's the Georgia State troopers that all get an issue Glock for their belt and a baby Glock in the same caliber (.40?) for an ankle holster.