"....what would people say if they saw a short black plastic stocked pump shotgun with Ghost Ring sights in the hunting field?"
Folks I know around here* would call it a slug gun, brush gun or swamp gun. Great for slug or buckshot for biggame in heavy cover, and the slightly wider pattern with birdshot works well for hunting bird or small game in grown up areas.
*(UPDT: Long ranges can be hard to find in the mountains. East Tennessee stood in for a jungle in one of those Chuck Norris movies a few years back; an acquaintance who was involved in local dinner theatre, Nils Cruz, had a bit part. ADDED: it was Delta Force 2, had to look it up, those 1980s action flix were kind of a blur.)