One big way to tell the KO from the real one is the roof on the bootleg is unpainted and molded in clear plastic while the original had white paint aps.
Doesn't Reprolables do a full set of stickers for it including the roof labels? That would make it look not quite so ...... stupid.
I have been told these are shipping in the next week or so. Not sure if they have fixed the roof paint app or not as all the demos I have seen have the clear roof.