I'm in the same situation, 4s on 5.1.1
I don't really want to update because I will lose stock google maps which is much smoother than the new version, and the old youtube app (it has it's uses!)
And my phone basically works fine, I like ios 5 layout and the jb is very stable.
Also if there is no re-restore on 6.1 once Apple pushes out 6.1.1 then I can't see how it's worth it since ios 6 doesn't have a lot to offer anyway. I would love to try it and then go back, but there's no going back! Might wait for ios 7...