Real cops carry revolver.
I've known quite a few real cops, and deputies, who carried 1911s...myself included. I've known my share "real cops" who carried Glocks mandated by their department.
Revolver guys can shoot.
I spent the last 6 years before retiring as my department's chief firearms instructor. The Sheriff's Dept. was about 60-65% semi-autos, all 1911s except for two deputies who had SIG 220s. The remaining 35-40% revolvers, either issue M-66s or their own personal weapons. Routinely over the 6 years, I had more revolver shooters in remedial qualification training that semi-autos.
Dave