As usual, I continue to live in the past.
While in Africa, I have tried the binocular harness system but, found it awkward.
Actually, it is more accurate to say that, I'm the awkward part of this equation, not so much the equipment.
Anyway, at the end of that safari, I gave my harness to a staff member, there where I hunted.
But at any rate, with my binos smack in the middle of my torso, I knocked them with my rifle and my wrist watch, once too often.
Not hard enough to damage anything but the sound is extremely unacceptable, during the final stages of a stalk.
I've gone back to the old fashioned / simple over-the-shoulder strap.
My binoculars are somewhat on the heavy side (Swarovski 10x42 EL) but, they ride very well for me, via the single strap.
In fact recently, I set aside the factory included strap and bought the exact canvas and leather strap model, shown on the previous page of this thread, posted by member "safari SUPPLIES".
The factory strap worked as well as I could hope for but, I just thought the canvas and leather one added a touch of class to my binoculars, in stark contrast to my otherwise low class to no class at all persona (no doubt others will confirm this).