The deal seems to be that your desire to publicize the love affair you have with yourself continues unabated. I'm almost joking.
Beyond that, you are making a good point against which I have not argued. Practicing with a variety of guns does seem to increase skill across the board. For example, I believe (but cannot prove) that I am a better Glock shooter for my time shooting J frames. Note that this does not mean that I carry the J frames.
Why is that a mental disconnect? You aren't the best shooter, and yet you prefer to carry something you shoot very well, vs something you shoot less well (within the implied parameters of something you can reasonably conceal). The argument against an arbitrary, whim-based carry rotation is that it needlessly hurts your performance if the music stops when you are carrying a gun you don't shoot as well as others.
That's outstanding, and I'll note that while he isn't long on self-promotion, in terms of hard skills, @
Clusterfrack is easily one of the most dangerous people on this forum. Notice that he tends to carry a service-sized pistol.
Plucking from a pile of very different pistols because of how you feel like accessorizing yourself that day is not functionally different from a random selection in this context.
This is very true, of course. We (mostly) don't EDC rifles with optics, since our EDC guns need to fit into our lifestyles. Having to defend yourself (at all or again, depending on the person) with a pistol is very unlikely, after all.
The fact remains that if you own two pistols of similar concealability, reliability, and safety, and you shoot one of them markedly better than the other, it is simply a bad idea to pick the other one because it more closely matches the color of your pocket square.