Menno:
Here are a few other links involving M9 bayonets coming from the US DRMS you might find interesting:
http://www.quarterbore.net/forums/showthread.php?t=3441
http://www.quarterbore.net/forums/showthread.php?t=3340
http://www.quarterbore.net/forums/showthread.php?t=5065
Regarding the Ontario examples, I know forum member 'Numberonegi" (also his handle on Ebay) has acquired some of these in black from the DRMS auction. He might be able to provide you some specifics about these M9s.