Yeah, right! Come with me and still hunt for a few hours and leave the rifle in ONE hand and don't change it to the other when your hand gets tired or cold!
.....for the last 40 years I have still hunted with a slightly sporterized M1917. It's like carrying a railroad tie around while still hunting......but it hits where I point it every time. I still/sneak hunt large tracts of public land where a days hunt may last from sunup to sundown....distance when going slow enough to be effective is not important. Still the only time I use the sling is when I'm done hunting. Many has been the time when I have jumped a buck in is bed @ 10 yards and only have a split second to get off a clean shot. Having the gun on my shoulder on the sling or any other contraption that takes even a split second to shoulder the gun would mean no shot. To me, it's very similar to hunting grouse. The second you ain't ready is when the opportunity will arise. When your hand/arm gets tired or cold, it's time to take a break. The ten minutes of rest will give the woods time to quiet down and often will reveal deer you may have walked past.
Hence the reason I'm looking for something to keep me comfortable and hunting efficiently. This also mainly gets me to keep the binoculars at my face... where they belong to spot deer.
I know many scoff at the idea of using the scope to spot deer. But over the years I have used binos and find for ME they are too much bother when still hunting. Sitting in a stand or blind is different, and maybe out west where distances are greater they may be more of an advantage. But where I hunt, 100 yards is a very long ways. Even tho my eyes are gettin' old, they still work to pick out things in the woods that just don't look right.....bringing up the rifle to confirm or to verify my suspicions puts me on the target if my suspicions are correct. Again, in many instances putting the gun down to raise the binos makes more movement that just raising the gun...and it also takes the gun outta my hands. I have tried many types of rigs to hold binos securely while hunting, but they still allow too much movement and tend to get in the way when transversing thru the thick brush I like to hunt. I do not use the scope to check out other hunters, nor do I use it to scan other things other than area's that may hold deer....and as always, my finger is outta the trigger guard until I am ready to shoot. It has become automatic for me to crank up the power to observe things at a distance and then to crank it back down before proceeding. Again, this is just MHO and what works for me........you do what works for you. That is a major part of being a hunter....the adaptation of methods and strategies, and to use them in your specific situation.
