I am a lefty so for me, it was left rear pocket for my wallet for most of my life. Then in my 30s, I got hit with a back spasm that literally crippled me for several days. Hydrocodone just to get up to pee.Back right rear wallet
That’s when I started leaving my wallet in my front pocket from then on. Sitting on that bulge on one side every day, torques your spine out of alignment. My back problems are mostly gone now with the exception of overdoing it in the yard or snow shoveling.
I strictly carry oh OWB or IWB now, although there are times I would like to go shirt tucked for pool league night, but cannot open carry there. I have never fired the Walther PP in 32 ACP I inherited from my uncle (it is like new and has had only one magazine run through it), but that might make a good ankle gun.