Simple and compact = good. I way overthought the slinging solution for my short-stocked, dehorned* 870P. One-point, two-point, padded, unpadded... slings for carbines, slings for rifles, slings, slings, slings...a crapload of 'em. I found out that single-point slings worked great for me only if I didn't move. I also learned that pump-action shotguns can be particularly obnoxious WRT two-point slings because Murphy's Law will often put some part the sling right were the pump handle is going to run into it and hang something up. The first time out testing one particularly neat tactical sling found that the quick-adjust hardware could - and actually did - get itself between the front of the forearm and the retaining ring on the barrel so that the gun would not return to battery.
Imagine my surprise.
A shooting buddy who swears by the ancient GI "silent sling" told me that what I needed was nothing more than a carry strap, and I should leave the bells and whistles for other longarms. So I ended up buying some coyote tan nylon webbing and some ITT Nexus "slides," and made my own K.I.S.S. sling. Keeping as much as I could away from the front end and pointing "down," I ended up with this homely but functional setup.
Attachment 65188
Using GrovTec QD swivels, the sling goes on and off easily, but even when left on while operating, the setup has not snagged or jammed anything up in the couple years I have been using it.
*"Dehorned" by way of the 18" barrel with low-profile "DEA-style" XS sights, which - unlike the standard Remington LE irons - do not try and bring along everything they come in contact with, be it fabric or flesh. The shotgun remains as shown having proven to me the procedural advantage of having a utility shotgun that is "slick" enough to slide in and out of a case or a vehicle without drama.