The modularity concept matches my own evolution of packing in camp and packing out animals. Packing elk quarters or a whole lion are ungainly with an internal. Using an 8 lb frame is heavy and hard to day hunt with.
All can work obviously. The MR at just over 4 lbs and modularity is a good setup.
What I'm seeing here may be better at less weight, more venting... if it carries the weight.
