small rack top bags also use it's velcro on the side rails..of that rack too..

But, a Beam rack off the seatpost with the bag on it,
would still let you use the empty rear rack, fold under, as the prop stand ..

there are expanding 'spaniel ear' bags that will drape over the sides
to use then.. rack has side supports..


my Touring Front bag is the Messenger sized bag..
Un rolled it will top load with a lot, a toe strap thru the handle,
around the steering mast , supports extra weight well .