Not a common fantasy or scenario but not unknown either. Can work quite well with matching 'his and hers' belts with similar and interchangeable...
IMO there are three ways this could work. 1. mutual KHing so each has the other's keys. 2. third party has keys of the locked KH 3. locked KH has...
Sounds to me she's topping from the bottom.
Yes, I saw a version with another ending too. Not nearly so good IMO.
This trilogy is one of my favourites. http://www.tpe.com/~altarboy/not80823.htm http://www.tpe.com/~altarboy/not90603.htm...
Do you have a KH?
I think this is a brilliant dynamic. And plenty of potential for the third party KH as well. It could work especially well if you were both...