Interesting reading Rockchuck. I see a them around here, but we are all horseman or mule skinners.
I never just take one horse either, I always take two , they are often tied up for long periods together and they don't fuss together.
I am curious, You put up with poor behaviour?
I keep our stock respectful around people and won't allow them any major decisions.
A pack sure looks like it would roll or creep forward or backward. I bet fitting them is very key.
There cloven hooves look grippy and are probably able to handle steep rocky country but I have got equine into mountain goat country regularily, depending on the breed and how I shoe them.
Anyways it is good reading....cheers