I do not “rotate.” I do train to use three systems, which are sufficiently different that I will not confuse them; each is instantly recognizable at first touch.
I am about to enter a transition period, so what is true today may not be true when I am busy being grandpa, as Grandson #2 is due in late December, and I will be using much accumulated leave before and after that time, and my retire from LEO-ing in early 2018. For reference, Texas had no general concealed-carry for private citizens until the Nineties, so I started carrying handguns during personal time only after being sworn-in as a police officer in March 1983. I have carried daily, quite consistently, since that time.
My newest handgun system is 9mm Gen4 Glocks. Forty to fifty hours a week, I am likely to be wearing my duty rig with the holster and mag pouches for Glocks. The Safariland 6360 holster will accomodate my G34, G17, and G19 pistols. A G26 is my hide-out gun. Simple convenience means that I am likely to tote a G19 or G17 during personal time. The draw-back is that I am just not as accurate with Glocks, as with my other two systems, at extended range.
My oldest handgun system is the 1911, starting in 1982 or 1983, though I did not regularly carry a 1911 until 1990, and there have been gaps in my 1911 ownership. My two current 911 pistols are Les Baer, full-sized 5” models, acquired in 2000 and 2016. I have a duty rig set-up for the 1911, but it does not work so well inside our newest, smaller patrol vehicles. Several times a week, a 1911 may well be in my concealment holster, during personal time.
My second system, in order of acquisition, is the broad category of DA revolvers, made by S&W and Ruger. I bought my first S&W revolvers in 1983, the year I started attending a police academy, and I have never been without 2+ S&W revolvers since that time, though, regrettably, I no longer have my earlierst ones. I added a Ruger GP100 about 1990 or 1991, and have really loved Rugers since that time. I am likely to carry a Ruger SP101 when working in the yard or carport, and therefore not wearing a normal holster. I recently added a Kramer IWB rig for my newest revolver, a Wiley Clapp edition of the GP100. I may well increase the carry hours of my revolvers after I retire, especially the ones with spur-less hammers, which may be a best practice when carrying toddler and infant grandsons much of the time.