I always carry OC, especially when I have a gun. I do not want my only option to be lethal force. If someone comes at you with no weapon, you sure don't want to pull a pistol, but you also do not want to wrestle with him/her either. The last thing I want is for someone to get my gun, which is a very real possibility if you are fighting. OC gives you a less than lethal alternative. Hopefully it does it's job and you will not have to use lethal force, but if it does not stop the person, it gives you a more legitimate reason for increasing your use of force. If you do have to shoot someone, it looks much better in court if you can prove that you did everything you could to avoid it. I worked at a state maximum security prison that used plenty of OC. It works a majority of the time, escpecially if you get one of the better brands. I have never seen Punch II fail, and I have been hit with it myself. I have faith that it is going to work, and carry it daily.