I haven't any law enforcement experience, but have CC'd for about the last 30+ years…since permits were available in KY, and now in LA. I started carrying a Glock 23, while backpacking in the Red River Gorge, when black bears started becoming prevalent. Took a chance on its little brother, and found the 27, with std mags, plenty easy to shoot and control. It's become my EDC/CC since. Can generally keep it concealed under loose fitting T's. But, rarely pack a spare mag. At home or near a vehicle, there's always some close…plus we rarely go anywhere after dark. And never in dangerous environs. Nine rounds of 40 cal hollow points should be plenty.
WJW