All my gamers are hanging on a range of (plastic) hangers of varying sizes. Most of my retail authentics are too, with the exception of the overspill, which are neatly folded (trying to avoid creasing the numbers, as much as possible.)
I'll typically throw on an authentic for a few hours to lounge about in after work, so I like to have the ones I'm wearing on a regular basis close to hand.
I've never had any problems with hanger bumps in any of my jerseys though.
I stuffed my replicas in a drawer after my eyes were opened to the world of authentics!