IIRC Astaire never recieved the Legion d'Honneur, so no idea why the lapel is threaded... Anyway - single-fold cuffs, 3 cuff buttons, satin lapels(!), flap pockets(!!), non-covered buttons(!!!)... reads like a laundry list of yellow and red-flags for SF-approved formalwear. Yet inexplicably these guys are rocking
it. Goes to show the gulf between SF pedagogy and real life awesomeness.
They also make a strong case for single shirt stud showing as well.