Good post, Phil. All my field guns have slings for the very reasons cited. Cheers

No complaints about the Sportsman's Outdoors Swiftach Sling I picked up. Very similar, and it's comfortable.

I hunt sharptailed grouse more than pheasants and often your hunt ends quite a ways from the truck so a slung shotgun is much easier carried back to the vehicle but the sling is not attached while hunting. I have several of the "Claw" slings Phil commented on which work great on my semi auto's as well as my rifles. For my doubles, I have a sling with loops at the end that you put over the barrels and the stock that the weight of the shotgun holds the sling in place.

I have Claw slings on my deer rifles (leave them on pretty much all the time, use them to rest forearm on stand wall/shooting arm, etc. to prevent excess noise) and love them. But the gun I sling and walk with the most is my 11-87 Turkey Special and, dummy that I am, I left the sling it came with on it and am constantly having to readjust it as I walk. I'm usually wearing a Bug Tamer jacket which only makes it worse. Dummy! Time for a non-slip camo Claw on that one. Thanks for pointing out the obvious, Phil. Evidently I need help seeing said "obvious". Sheeess.

I don't know why it took me so long but I finally outfitted by our dedicated, synthetic-stocked turkey guns with neoprene slings about three years ago. Don't know if I actually got smarter or wiser or if was just the need with passing years to make things a little easier, physically.
In any event, it was one of the best moves I ever made (the other was going to a youth 20 instead of my O/U 12). My wife's Weatherby SA-08 came with studs so attaching a neoprene sling with QDs was easy; my little H&R Pardner didn't have studs so I used one with loops. We always take them off when we're set up, but when you're walking and calling and carrying decoys and seats and all the other paraphernalia associated with turkey hunting, the only thing better than a good carrying sling would be a pair of gun bearers.
Turkey hunting (and waterfowl) is also one of the few times I prefer synthetic stocks and non-leather slings. It may not rain for eight months here in S. Texas, but you can bet the house you'll get drenched at least once when the toms are gobbling.

The Claw is the only sling I have found that stays put. A sling is a must if you hunt ducks in flooded timber. It helps to always make sure that the muzzle is in a safe direction and gives your back a rest. I hang my shotgun and pack from a cinch climbing stand foot peg cinched to a tree making for a more enjoyable hunt. I especially like that Phil noted he keeps the chamber dry when working with decoys. You can never be too safe.