There was a long discussion (with no real resolution to it) whether the Pimax 200° FoV number is about the horizontal or the diagonal FoV. They have repeatedly said it was horizontal, but e.g. their KS FoV graphics depict it to be diagonal. So inconclusive information here. Diagonal would obviously translate into a lower number for horizontal FoV.
But while it is cool to argue the shit out of everything (and frankly we seem to have little else to do these days), we will only get to know the answer once we try the 8K. Next opportunity being in Berlin. [edited because I was being thick - you would not be able to see the stick when wearing the M2… ]