Agree
I've heard guys on here, and seen guys in person carrying different firearms all the time. I hear putting guns in "the rotation". To me, that's a mistake. You need to know your EDC as the saying goes "like the back of your hand".
Revolver today, 1911 tomorrow, Striker fired with no safety the next. It's just causing confusion that need not be there. Because god forbid if the time ever comes? You have to rely on that muscle memory with your heart pounding out of your chest.
Stick with one gun.
What is the practical consideration? The assumption is that the stress response will cause loss of voluntary motor control and only pre-programmed muscle memory will be functional. I considered this to be an unproved or at least over-simplistic teaching. There are certainly anecdotes which would suggest that there is credence to the teaching, there are also anecdotes to the contrary.
The US Marine Corps has studied the question and has determined that about one in ten Marines are of a type who do not suffer from any diminished capacity during an extreme stress response. You are scared but you can still think. The Corps has a way to find these individuals and assign them to the squad automatic weapons, a dramatic improvement in unit effectiveness. (Please correct me anyone as I am no expert, with my thanks.) I know that my father, my brother, and my daughter are all such, and I have reason to believe it is true for me also. I believe there is a genetic component to this. (Again please correct me.)
Similarly, there are one in ten individuals who are paralyzed by the adrenalin dump and would fit the description you reference. I also feel that most people will fall closer to the panic side of the spectrum than on my side.
Anecdotes- If you read about a bad thing happening and you are bothered and want to change your strategy, do it. I will need more evidence. There are people who heard stories of their particular Sig pistol going off uncommanded, so they are now carrying on an empty chamber! I will NEVER do that!
Training- You cannot prepare for everything, but you can train for a fight. Standing at the line holding the pistol and slowly squeezing the trigger does what exactly?? People are doing things at the range which will not help them win a real gunfight. Most gun ranges have safety protocols that prevent realistic practice.
One Gun- I can say that I agree that there is some validity to the idea. If you can shoot a double action revolver well, then you will shoot other pistols well. But my friends who shoot the 1911 very well, cannot take my Smith 3rd Gen 457 or 6906 and hit well with it double or single action! However it will be well enough. If you carry like you practice, same type holster, same type trigger action, same safety system, there is a speed advantage with your first shot. But being honest, that additional speed is practically never decisive in a fight. My speed has more to do with the kind of cover garment than anything else. I can draw from under a suit coat fastest, then from a Levi jacket, but slowest of all from under an unbuttoned shirt.
Rotation of various pistols- I was practicing shoot and move with a 1911 and got held up trying to rack the slide by pulling on the back instead of using the slide lever. That gun had recoil buffers installed which were preventing me. I took those out and I practiced until it became automatic for me to use the slide release on every pistol. I can go between revolvers and traditional DA/SA pistols with absolutely no issues at all, but if I carry a 1911 I am going to forget to operate that safety, maybe? But I never have, and since I can still think under extreme stress, it might not be a problem. But if it is, when the gun don't go boom, I am gonna be able to duh wipe the safety and get off the shot. I suspect that those who have a rotation of pistols, might ought to practice with them until they can see a favorite. When I saw that I could do so much better with my 457 than the others, that became the EDC.
Defensive encounters are incredibly complex. Remember that a gunfight is more fight than gun! Please correct me anyone with my thanks and thanks Miracle Man for this thread! Enjoyed it so much.