Once I retired and was free to carry whatever I wanted I carry different sidearms depending on the situation. My Glock 27 fits well in a cargo pocket or on my ankle. My S&W Model 13-4 3" is light and easy to carry, and very accurate. I carry a 1911 in 10mm or .45 ACP often, usually when the weather is cooler.
Before retirement I was restricted to a Glock 17, 19, 21, 22, 23, 27, or 43. I was issued or carried all of them except the 17 and 23.