Thanks for the info. The AGC system was what I had seen earlier and looks to be the closest to what I'm looking for. Glad to hear those that have tried it, like it.

I had seen the Badlands, but the straps are so big, it doesn't look to be very comfortable when worn underneath a backpack.
Eberlestock makes one that looks pretty nice, but it attaches to your pack straps. I'm not sure if a strap system could be rigged so that if you shed the pack to low crawl, you could still have your glass with you (might be able to make current harness work so that it could be worn under a pack).
Thanks again for the links and feedback.