You could try to wear it at the waste but it would not work well at all.
I ordered an m2, m1, and cocoon all good. Make sure you order the clips from maxpedition to attach the m1 and m2 to the fat boy. I have yet to figure out how to attach the cocoon but with a carabineer you can clip it to anything.
As for the motercycle I dont know but it does conform to the body well.