I don’t know. A carry “rotation” depends on a lot of things.   Carrying five very different guns a week because you can’t make up your mind is one thing.  Alternating between a couple of similar guns is another. 
I used to switch off between 1911s and Browning HiPowers. They work the same, controls are the same, the sights were the same. I didn’t see or couldn’t envision any harm from doing it.
Switching from say, a Beretta 92 to Glock to a 1911 might be a different thing. I wouldn’t do something like that due to all the differences between those.
However, I have long carried a snub backup gun to whatever else I carried. Lots more differences there, so I’m a hypocrite.
				
			I used to switch off between 1911s and Browning HiPowers. They work the same, controls are the same, the sights were the same. I didn’t see or couldn’t envision any harm from doing it.
Switching from say, a Beretta 92 to Glock to a 1911 might be a different thing. I wouldn’t do something like that due to all the differences between those.
However, I have long carried a snub backup gun to whatever else I carried. Lots more differences there, so I’m a hypocrite.
 
	 
 
		
 
 
		 
 
		 
 
		 
 
		
 
 
		 
 
		
 
 
		