Ah. Interesting. My dad wondered where the name came from all I could think of is Trois-Riveries. So I was stumped.
But yeah the beer pubs here in the area have it (The ones that specialize in Internationalism) and then the mom and pop liquer stores that pride themselves in International products have it. It's not big enough yet to get into the grocery stores here, but knowing how vast the beer selection is at the grocery stores, it soon will be probably.
It's weird, if they go off the beaten path in Canadian beers here past the (Molson, Labbatt, Moosehead) you might run into Sleeman's but most of the beers I've seen are from Quebec or have some ties to French Canada. I've never been able to figure this out. I'm almost certain this has nothing to do with the Quebec ties to this region as the vast majority folks don't know that their town are french. Somebody thought it was cool, named a subdivision La Pomme de Terre or that the fleur-de-lis is the official flag and symbol of the area. People are clueless about this. So I'm still confused whilst I go to a place on Chateau near Lacleade's in Soulard during Mardi Gras. lol