I had a custom sissybar made by StayFocused (Jeff) with the exact intentions you have - to be able to remove it when I didn't have a passenger. But, ever since I put the damn thing on, I love it and I don't want to take it off.
You might contact Jeff and see if he can work with you on a design that you'd like, as well as the easy-on/easy-off capability you're seeking.
I personally believe sissybars are like tattoos and that you should design your own, when possible.
http://www.furyforums.com/forum/memb...ap1000148.html