A L. W. Seecamp .32 acp in a pocket. Pull it out and have it in my left palm under the cite book during traffic stops (I used to do this many years ago with a pre-war Colt .25 acp - until I saw how weak and inaccurate that Colt was!).
A S&W 442 or a Kahr PM 9 on the left side of my body armor for cross draw from under my shirt (unless I'm wearing a heavy jacket in really cold weather; then in the snapped left hand pocket).
I always thought ankle carry made sense, until two incidents:
1. At a classroom training session, with a officer sitting across from me at a table. As he sat, his left pants cuff pulled up enough to expose his J frame on his ankle.
2. While serving a warrant, the BG ended up on his belly with my partner kneeling on his shoulders, his crotch above the BG's head, and my partner facing toward the BG's butkis. My partner's ankle mounted small Glock was exposed and actually closer to the BG's hands than to my partners hands by almost three feet! Sent shivers down my spine!
More than once recently, my Lieutenant's ankle mounted small Glock has been noticeable while he is seated.
I will say that while seated, bending over or on your back, ankle carry is fairly easy to get at. The two incidents above though made me otherwise uncomfortable with ankle carry.
I like the idea of placing my Seecamp in a cuff case on my belt. I may do that, since I now have additional space on my duty belt - thanks to a slight increase in my "girth".
