I can believe that they break, but it is attached to the same subframe that your passenger sits on. Id figure the bracket would break before the subframe.not worried about snapping your subframe? Sure, I'd love a top case, too, but the weight limit on that SW Motec rack is 10 lbs or so. ...and it has happened.
I guess if your touring with a passenger the best bet would be the ventura with cortech saddle bags (hopefully you have a lowmount exhaust...or you could make support brackets to keep the bags off the mufflers).
Didn't take any pics last year but I purchased the MotoPak 90 Liter soft bags for a 3 day camping trip last year. Cost me $130 on ebay (new) and held blanket, pillow, 4 changes of clothes, 2 books, shoes, and a six pack with room to spare.