I use the same tent for all of my cages except any fosters I may have.
I only have 2 serious markers and they are my only breeding pair, the female is just as bad if not worse than the male is when it comes to marking everything.
None of my other gliders are bothered by the pairs smell on the tent they just go about climbing and jumping to and from me they don't mark over the pairs markings.
Honestly it's the most funniest thing to watch the 2 mark it up. Tents can be "washed" outside, I've not found it to be a big deal and if you think about it it's not any different than scent swapping to help the gliders get used to each other. I kind of hope they keep it up after Danzig is neutered ( 2 more weeks !!)
Howeverrrrrr, they do poo in the tent, so if one cage has something contagious or parasites you run the risk of spreading it to the other cages if the tent is the only thing shared between cages, just something to keep in mind if you go from one cage to the other like I do.