I have that harness.
It's ok. Some gripes:
-The binos can slide out the sides. They won't get dropped/damaged, as they're tethered. It's just a pain in the butt.
-The flap on the top is narrower than it should be, so it can let weather get to the oculars on your binos it it's really snowing or raining hard.
That said, it does work fairly well, and is better than a neck strap by far.
If you think you want one, I am not going to use mine at this point, and I got it for cheap. I could pass it along for a pretty good price, and it looks like it's nearly new. I used it for one season.
I used a HornHunter enclosure/harness this past season.
-Binos are well-protected (completely enclosed)
-Rangefinder storage/carry system is awesome and works very, very well.
-Zippered rear pouch is perfect for a hunting license, pen, and zip ties.
-fairly bulky on your chest, but I could bowhunt with it with no issues, so it's just a pet peeve.
-fabric would "squeak" if I had the binos out and resting on top of the enclosure. I solved it with some talcum powder from my wind indicator squeeze bottle. Maybe a trip through the laundry would solve it? Don't know.
-Flap is held shut with a magnet, which is nice for most uses, BUT....I use my bino's when blood trailing, and if you lean over enough for the bino's to lean on that top flap, it isn't strong enough of a magnet to keep them in and they push the flap open and spill out. I think I can solve this with a jury-rigged buckle or strap to lock it shut when I want it shut.
I actually went back to a plain, unenclosed harness ($20 Cabela's version) for flintlock season. One of those covers you can get that goes on the optic itself might be the fix for foul weather? Haven't tried them, but it looks promising and is cheaper.