In Montreal the Hells Angels and West End Gang didn't go to war with the Mafia, but they also didn't have to because they did their own thing. The price of cocaine was set by the leaders of the three groups. And if the Italians used the port of Montreal to ship drugs, the West End Gang could bring the shipment through in return for something like 20% of the drugs.

Also, the police said they had intelligence that after the Montreal biker war was finished, Mom Boucher wanted to go to war with the Mafia. I would even say that with all the murders and the mob war, the Hells Angels are the strongest OC group in Montreal right now.