I was hoping to order up a Givi for it, but they didn't have a bracket for the 250 B&W. They have one for the smaller B&W's but I looked at the diagram for how it would go on and the 250 has too much plastic in the way. It is supposed to use the top bolts on the shocks, and come out a bit and back, but that would assume that the bolts were in plain view and they are not. The idea, though, is simple enough and I'm tempted to ask one of the many local metals shops if they could fab it for me, or ask some of the students and profs at the college where I teach. It can't be much more expensive than what Givi wanted for theirs.
I may also have the (Taiwanese) wife-unit call Kymco and see if those guys make anything for it, perhaps in the Euro market as I don't think Kymco sells the 250 in Taiwan.