Originally Posted by
spectastic
are the straps very durable? I'd hazard a guess that the bag is more stable when mounted straight to the saddle loops and seat post, which has 3 connecting points, as opposed to having the support rack, which really only has one (two if you count each rail), and nothing to keep the thing from bouncing up and down on rough terrain.
The Bagman support does add extra stability, in my experience. I don't like a Carradice swinging around behind me, and the Bagman support has the added advantage of keeping the bag away from the backs of my legs as I pedal.
We have the Bagman on several bikes, but they used primarily for randonneuring. On other bikes when we fit up a Carradice, we rest the bottom of it on the rear rack and wrap the strap around the front part of the rack.
As nun says, the leather straps are surprisingly durable, although I use a cut down strap from an old toe clip for the third attachment point.