Big one that I've seen lately on the Leica's is the Aziak Bino clamp, along with the RRS Cinch. Not sure how it interacts with the Outdoorsman's heads, but obviously the stud won't work if you do that.
OverviewThe RRS Cinch-LR Binocular Adapter provides quick-release functionality to your binocular/monocular of choice for housing diameter ranges between 1.77"-2.56". Designed in Lehi, UT. The Cinch-LR is a semi-permanent clamp mount, meaning that it can be left on the binocular when not mounted...