To ME (and me only) it makes sense to carry a gun in the same place, every time. If the SHTF, I don't want to have to think where my gun is and I don't want to have seconds to react and reach in the wrong place. People worry about how quickly they can draw a gun and place accurate shots on the target but need to consider the idea of not remembering where you decided to carry your gun today as opposed to yesterday or where you have it in the house as opposed to where you carry it in public. Or where you have it if you are at work as opposed to where you carry it when you are not at work. Where you have it when you are wearing shorts as opposed to where you carry it when you are in a suit. WHere you carry in the summer as opposed to winter...............I don't know about you but after I get dressed, I don't really think about the fact that I am carrying a gun any more than I constantly think about my car keys.
I don't carry all the time; for example, I don't carry at work. Since I was old enough to worry about such things, I have carried the same thing, in the same pocket every day. I have carried my keys, my change, and my pocket knife in my strong side front pocket. My money, spare set of keys..........in my left front pocket. Without thinking, as I walk up to my vehicle I reach in my front pocket for my keys etc. This is an automatic reflex for me. Therefore I am not going to start carrying a gun there. I have thought about it and actually tried it a couple times and I don't think it is a good idea FOR ME. YMMV.
I am a creature of habit obviously and I try not to vary things like this so that I am never looking for something; it is always in the same place. I work as a paramedic and even there I have two things on my belt the same place every day. If things get wild and hectic and I need one of those tools, I know exactly where they are. It would be easier for me to clip a radio onto my belt on the right side of my pants, but I never do that because on the right side just behind my hip is where I carry a gun and I never carry anything else in that spot. If I ever need to reach for a gun, that is where it is........every time. If I can't carry a gun there for some reason, I don't carry a gun.
EDIT: this same rationale is the reason I also only carry guns that operate in exactly the same way. I went with Glock. I have the full sized 17, the 26, and the 43. They are different sized guns, but all operate exactly the same way. I have the same brand and model of nite sights on all of them so the sight picture always looks the same. I have the same trigger in all of them so the trigger pull is always very similar. And for these guns I have exactly the same model holster................................