I was party to an old-fashioned hog-killing and dressing once and all the makings therefrom (as a kid), and one of the delights was FRESH pig skin from the lard rendering pot. Also in Far West Texas not far from El Paso, about 25 years ago, was served fresh pig-rinds instead of tortilla chips with our salsa to start the meal, was lovely. At the bbq stand in Livingston where we usually stop for lunch (in route to the Hammer In), they currently cook up fresh pig skins for eatin'.
Pig hide is
very tasty, and is why there's probably not a
lot of historic reference to it as a leather, especially from a time of scarcity rather than excess.