There are ladies on here that make nice little soft harness vests. They are lightweight, attach w/ velcro and you can choose your fabric.
Plus you get the satisfaction of knowing that you supported someone on this site.
I bought a couple from a nice lady on here and they are very lightweight, easy to take on and off and to me it seems they would be very difficult to get hung up on anything (they have a D ring sewn on the back).
Good luck to you.