My buddy shane swears by leaving the skin on feral hog for the same reasons as domestic. No reason not to. He insists that the american tradition of skinning feral hog is touched in the head. He knows meats from all types of domestic livestock well but prefers the wild pigs over all others.
What I am concerned about is dipping a field dressed hog in scalding water and flooding the inside with boiling water, causing damage/contamination or spoilage. A domestic hog is scalded without gutting first; the water has no way into the cavity.