(IMO) Having different guns for different circumstances is not the same as “rotating” your carry guns. As I’ve stated before I switch off between one of two guns depending on circumstances and my concealment needs.
90% of the time based on my circumstance I can dress in a way that that accommodates a full sized gun so I carry the M&P9. When I have to dress differently or I’m sitting around the house and I don’t want to carry a full sized gun I carry the 9C but in either case I’m carrying two almost identical guns.
To me “rotating” your carry guns is a mood thing. Like “I’m bored with my 1911 so today I’m going to carry my GLOCK” and for me mood has nothing to do with carrying a gun.