I guess I'll jump in, as I found my binoculars which had been missing since November - in the pontoon boat! I didn't see any mention of S4 Lockdown gear They make a good bino holder.
For example only: http://www.hayneedle.com/product/s4...1-1&gclid=CN-b7Lr0q74CFQcSMwod81cAKg

or try google. There are around $40, but no chest beating, no sag, quick deploy, and they protect the binocs. I haven't worn them with a pack yet, but the straps are thin and wide, I doubt there will be any issues. I've tried crooked horn, Cabelas, and one other that didn't last long enough for me to remember it. I wish someone would make an extra large size for my Steiner 8X56 - heavy, but if it is out there you can see it. For that one I have used a VeroVellini heavy strap, and when on horse or climbing, I have used a piece of shock cord with clips on each end to reduce the beating on the chest.
YMMV