I admittedly use full bino pacs (AGC for me) with heavier binos like the Geovids. However, the RY harness allows you to cram one barrel of the bino between your chest and one of the cords and it will stay tight and not sag at all. Like you, when serious hunting takes place I ditch the lens covers and just use the bino "nekkid" in the AGC pack, tethered to the shoulder straps of course, for quick access and usability.
