I have lived in Montreal for 4 years now and this is truly the best place for breakfast in town. That's right. I don't like waiting in lines. I'm a NYer through and through. But weekend mornings this place is worth it. Come early, try and beat the rush, and order one of the weekend specials. My favorite is the Hanover.
As for the service. They are friendly as long as you are. They are also very busy running around so fair enough if they want to be fast. I'm happy as long as my food makes it to me ASAP. Anyway, they are usually gorgeous. :)