Cooper had an almost ad last year doing one. He fs boarded mostly all of the ledge but yea. Welsh did bs lip to bs noseblunt so so long ago so I can't see how this would be that much harder(if at all)
Also can't quote but all you guys are re asking questions, ray maldonado did the bs noseblunt nollie heel out(to fakie or whatever).
And koston and that dude who ollied the flat bar to late 360 shove(can't remember his name) have both done 180 switch crook fakie flip popover, so I'm sure they or others have done it without the flip.