If you know a good fabricator/welder, just have them build you a rack.
I bought a set of wolfman bags for my DR650. Since they no longer sell the racks for their bags, I simply made my own.
i made both of these racks, the one on mine, as seen above, has tabs for the straps on the wolfman bags.
My friend is running nelson riggs bags, so I didn't weld any tabs on his
1/2" steel tubing, 1.2" bender, and a little bit of welding, and grinding, folowwed by a litttle bit of spray paint ;D ::001::