Appreciate! I don't own a rangefinder, and I tend to be a real minimalist for having stuff on my chest area. I really just want the simplest protective binoc cover/retainer possible, and I want minimal presence. No radio, light, rangefinder, firestarter, cellphone, shot glass or nose-hair trimmer for me. I actually don't even really like binocs on my chest but nothing better exists when wearing a pack.
I agree with keeping it simple. I found something to try this year, a US military molle style canteen pouch. Several camo patterns available, lightweight, durable, and holds 42mm binoculars. I'm using the pals webbing to attach my daypack chest strap.