Smoke, thanks.
I gave Ted's "Sling Stud" a thorough workout. It was great. I like it as well as my own design, and I think his "Franken Stud" (which is wider than the one I used) would be better than both.
When humping a normal 50lb pack on normal terrain, the keeper holds it in place nicely. When negotiating really steep terrain, tucking the sling under the sternum strap in addition to the keeper (sling stud) is the way to go. When the load gets ridiculous and the terrain even worse, that's the ONLY way to go.
