Hi
Givi do Tanklock bags for the Crossrunner. I have a small one on mine and really like it. The mount fits to the fuel cap mount and it sits back from the fuel cap so that it doesn't interfere with the handlebars.
I'm not sure if Baglux do a tank cover for us though (their bags are universal, they clip to the tank cover which is specific to each bike) but their bags are very good too, as long as you like a cover over your tank.