I’m not LEO but, I worked at several gun shops over the years and knew plenty of LEO’s that carried J-Frame backups. Also Retired Officer’s and Sheriff’s that carry J-Frames as EDC. I read enough books by Evan Marshall, Jim Cirillo and Massad Ayoob ,to name a few, to have learned why it is a good idea to carry a backup. I normally carry Two J-Frames but, years back going through a few semi autos I always had a 442 in my pocket. When your behind a gun counter and questionable looking people come in, it was comforting to casually put my hand in my pocket.