I have S W Motech racks on the GSX.
They are the removable ones which you can also get for the Strom.
We got them second hand from a nice bloke in Germany who'd fitted the locking 'bolts' to one point each side.
That way they can be removed when not wanted and put back on for a tour.
The mrs has said to leave them on as she may want the boxes for "lady stuff" when she goes out for a spin.
They have givi mounting lugs but are not the nicest looking bit of kit but functional.
You may just be able to see the locking bolt just behind the rear shock top mount.