I have three .357 SP101 snubbies, with varying hammer types, and one of them is with me virtually 100% of the time. So, from that viewpont, I do not rotate or switch. But, the SP101 is rarely alone, and its role may change during the day, such as when I am my police uniform, and the SIG P229R DAK is on my hip, the SP101 migrates to "back-up gun" status. Even out of uniform, the SP101 is usually accompanied by another handgun, which may be another SP101, a 4" Speed Six, a 4" GP100, or, rarely, the SIG. All of these carry guns have a long-stroke DA trigger pull, though the SIG can be used in short-reset mode. I had tried to use a Glock with this mix, but found that shooting the short-trigger-stroke Glock had a negative influence on my skill with longer-stroke DA shooting. Bottom line, I do always carry the same gun, but I also carry different guns, though I try to keep all of my normal, serious carry handguns similar in operation.