Camera and Binocular harness
A quick update about an experience I had today. I found myself on a 2-1/2 mile walk with my binoculars on the harness style strap I have used for about 25 years and carrying my camera in my hand. (I had not planned on doing any serious walking on the outing so I didn't carry any camera strap).
About a mile into the walk I was getting tired of carrying the camera and it occurred to my that I could unhook one side of the binoculars and connect that end to one side of the camera. I ended up with the camera on one hip and the binoculars on the other.
I would not recommend this as a long term solution but it worked pretty well as a "field expedient" solution.
Reality is that which, when you stop believing in it, doesn't go away.