That means the same primary weapon in the same holster, which means the same presentation, grip, balance, sight picture, trigger, and malfunction clearing steps.
It also means that for back-up, the same back-up weapon in the same place.
I agree with this line of thinking. Same stuff, in the same place, along with constant practice. Things need to be practiced to the point of "thoughtless", if youre serious about things. When you "think" GUN, it should just appear in your hands, and with no thought as to how it got there.
The last thing you really need, it to look like youre patting yourself down, looking for where you put the gun today, and then trying to figure out what it is, when you finally find it.
Im not saying to limit yourself in your experiences here though. Being familiar with as many types/platforms is a good thing, and if possible, should also be practiced. You never know when you might have to pick something up and use it. A lot of this just comes from the normal progression of finding what it is you want too. Every new type of gun is a learning experience, be it a positive one or not so much. Its easy enough, to have one of each "type", to occasionally practice with to stay familiar with them.
Some of the scenarios are sometimes a little far-fetched in regards to responses. Let's say you're strolling through a crowded mall and someone twenty-five yards away decides to attack you, for reasons unknown. He isn't going to make a frontal rush, probably having to push people out of the way to do so. He'll sneak up behind you. Even if he is within five yards right in front, he'll have the drop on you. So in public (for those who are not law enforcement officers), whatever is going to happen is going to happen not far beyond arms length.
I think most scenarios people have, are what they feel comfortable with winning, and justify what their weapon choices are, at least in their minds eye. Reality is, you get to deal with whatever it is youre dealt, and if youre not well rounded in your training/practice, then youre going to be stuck with trying to get that square peg into a moving round hole. If youve convinced yourself all you need is a third line back up gun for daily carry, then it only gets worse.
The mall thing above, was actually in the news in the not so distant past, and with the current world situation, could easily be here at any given moment. Its really not all that far fetched. Of course, most Americans probably cant wrap their heads around it actually happening here. Then again, theres always the movies or schools.
As for the distances involved, I have to wonder sometimes, if people even know what they are looking at in their real world environments. Practice always seems to be done at certain "fixed" ranges, and in the same way, and at the same, often unrealistic targets. There is no realistic perspective.
Next time youre out and about, pace some things off in the places you visit, and other than contact distances, I think youll be amazed at how far a shot youre really looking at in most cases. Aisles in our local market are close to 50 yards, from one end to another, and across the front of the local Walmart, its over 80 yards.
If all you practice is at 7 yards, and you think you have it covered, you may want to think it over some more. Being able to make decent hits at 50, or even 100 yards with a handgun, really isnt all that hard, but does require some practice. If you dont practice those type shots, what do you think Murphy will throw your way when your turn happens to come?
But the one-gun-one-holster argument has its limits; in my life, that limit regards dress. I can carry a pistol IWB strong side in most situations, but "most" is not a synonym for "all." When I need to wear a tuxedo, as happens a few times a year, am I better off changing pistols and/or holsters or going unarmed? Or does the fact that I wear a tux occasionally mean that I should always pocket carry a pistol of less capacity and caliber than I currently do on the other 360 or so days?
You can alleviate things here, if you carry a back up that is the same platform as your full size gun.
A 26 in a Smart Carry, can be in the same place as a 17 that is normally carried (just a little deeper), and you really havent changed much. Truth be told, depending on the pants youre wearing, and your physical/body shape, it could easily be the same 17 in that Smart Carry.