I don't have a "rotation" per se. I have several guns that I carry dependent upon what I'm doing and/or what I'm wearing. I only carry two types of handgun - 1911s and variants and S&W DA revolvers. I'm well versed in the operation of both platforms and have no issues going from one type to the other.
Duty - FNP45 Tactical
Off duty: Colt 1991A1 Compact
BUG/Off duty: S&W 360J
Field/Recreation: S&W 327NG
Duty - FNP45 Tactical
Off duty: Colt 1991A1 Compact
BUG/Off duty: S&W 360J
Field/Recreation: S&W 327NG