Well, I bought a new one this weekend to see if it was actually better than the original style. It definitely is.
It's a good thing I bought it too, as one of my llamas injured his foot this weekend while we were packing in our elk camp. That meant that I had to carry my 12' x 12' Alaknak tent all the way up to camp, which took four hours. It would have been a real pain with the original style, but I lashed it to the top of the new one and it was a comfortable carry all the way. It was a steep climb, but comfortable. The frame really makes a difference, evenly distributing the weight so that it is not all on your shoulders.
This new design will pack antlers and elk quarters with ease. No worries.