Funny...I was actually going to modify mine to detach using a quick release pin similar to my Street Glide. I haven't been able to dig into the bike, but I figured it could be as easy as something like your photo, but having a pin and large washer with a rubber stop to keep them tight to the frame.
I also was going to trick the lock system so that I didn't have to put a key in to open the saddle bags. I did this on my FJR 1300 relatively easy, but I may have to do more modifications to the bike to enable this feature. My R1200Rt was nice because you didn't need the key to release and open the bags, just push the button to open. If you want to lock it, take your key and lock it...wish I had this because most of the time I don't need to secure anything, just need a place to put it and close it up.
I also was going to trick the lock system so that I didn't have to put a key in to open the saddle bags. I did this on my FJR 1300 relatively easy, but I may have to do more modifications to the bike to enable this feature. My R1200Rt was nice because you didn't need the key to release and open the bags, just push the button to open. If you want to lock it, take your key and lock it...wish I had this because most of the time I don't need to secure anything, just need a place to put it and close it up.