We have a theater here in Auburn that supposedly has a ban on bringing firearms in. Of course, no one actually pays any attention to it, and the theater does not enforce it, because to do so would be economic suicide in this environment. But, at least theoretically, you could be asked to leave the theater if you were carrying.
One solution I thought of was using an ankle rig to conceal under jeans. I consider the likelihood of another theater shooter slim, and the likelihood of that occurring in Auburn to be somewhere close to the odds that Vanderbilt will win the National Football Championship (ever). But, you plan for the possibility, not the probability, and so I went looking for an ankle rig.
One of the video sources I follow on YouTube is Active Self Protection, and John Correa has some praise from time to time for Wilderness Tactical in Phoenix (www.thewilderness.com). So I found their Wilderness Renegade, plunked down the $80 for the holster, and waited.

The holster was thoughtfully designed with some sheepskin to pad the area near the ankle bone so as not to be uncomfortable. Sadly, the padding is inadequate (at least for me) and this is the least comfortable holster I own. I bought it for my Glock 26 and the holster fits the gun, but just barely. It fit around my ankle just fine. I had to wear crew socks, however, to get some additional padding, and this is not a “wear it all day” holster. I took it off the moment we got back from the movies.
My experience leads me to believe that an ankle holster is somewhere behind the belly band holster in usefulness, particularly if you’re like me, over 60, and you don’t like bending down that much. It is not a workable solution for me. That doesn’t mean it wouldn’t work for you. The company is a good company and they shipped promptly. Sadly, their product did not work for me.