The disguises were also a riot. A mask/disguise might work well enough for stage or screen, but I question whether you could pull it off in close quarters.
Ha yeah, even as a kid I had a hard time believing that trick could really be pulled off. What with people's very different bone structures and all the incredibly subtle details that make up the human face.
Even artists who spend weeks sculpting wax figures from exact measurements have a hard time making it look completely real.