Do you regularly change the position in which you carry a handgun? I especially like to know where my firearm is at all times. Wearing it in the same place (or very limited number of places on my person) virtually all of the time assures I will always reach for it in the same place - and it will be there. I have heard too many stories of people reaching for a handgun on their person and then reaching again and sometimes again because they forgot where it was being worn that particular day. If I must carry it other than where I normally carry it, then I place it somewhere and practice drawing several times, with an unploaded gun, to make sure it sets into the old muscle memory. Hopefully the muscles will remember if under stress. I really believe though, it is best to always carry in the same position on your person if at all possible.