The Bridgeport brochure seems to indicate that the MC change-over fitting is UL listed, so if wire marking is the actual problem, then wouldn't that mean that technically you couldn't strip and terminate things like MC, NM or SE cables in a device box, ceiling box, panel board, service equipment, appliance or light fixture, etc., since the individual unbroken conductors are not marked with their UL/ETL listing, voltage rating or insulation type. I'm just wondering if there is some type of maximum NEC length limitation for listed cable assemblies that have the outer jacket removed for splicing and termination.