My set up goes: Small pannier rack + traditional saddlebag. Bag loops around saddle loops/rails. Bag's seat post strap pulling it down (and, most importantly to me, away from my legs) onto the front end of rack. Bungee from loops, under middle part of rack, back up to other strap.
No bag swing, no bagman rubbish. Also, bike constantly ready for panniers should the need arise. Also a proper back end mount for my light afforded by the rack.
I gave up on my bagman a while back.
My set up goes: Small pannier rack + traditional saddlebag. Bag loops around saddle loops/rails. Bag's seat post strap pulling it down (and, most importantly to me, away from my legs) onto the front end of rack. Bungee from loops, under middle part of rack, back up to other strap.
No bag swing, no bagman rubbish. Also, bike constantly ready for panniers should the need arise. Also a proper back end mount for my light afforded by the rack.
Nerdy, but works a treat.