I did quickly realize that if I didn't want to flash my weapon I'd need to stop carrying my wallet in my right hip pocket...
Whether right or left handed, most guys tend to carry their wallets in the right-rear pocket -- and most pickpockets know this. Oddly enough, most of the dressier pants have a button on the left-rear pocket. A button ain't much, but it's another obstacle in the pickpocket's path.
Also, wallets in the back pocket can lead to some folks having a problem with the sciatic nerve, and/or the pelvis. So, back and/or leg pain can be a result of carrying your wallet in either of the back pockets.