so i have heard that givi makes one that might fit and i have searched the forums and can't find it anywhere so thought i might as well just ask what  panniers are out there for an 11 gs500?

Hepco and becker makes a rack for the '01+ GS. You need to find a store that imports hepco and becker stuff and ask them to add the racks to their next order. Then you can use Hepco & Becker panniers or use pelican cases with happy trails mounts or something.

I will be building a set of racks and panniers for my wifes bike soon,probably going to use 50mm ammo cans.