For now I have my old tank bag that I have modified with velcro and webbing instead of just using the magnets that came with the bag.

A Givi 40 litre water proof hold-all that is foldable and simple plus basic.

When the Givi back cradle for the 2015 Versys 650 is available then I may get a 55 litre top case. Odd looking it may be but when I tour it will come in handy.

Side Panniers? I don't think so because of the extra width it adds on and makes lane splitting impossible in traffic.