Having had an spectacular experience at Joe Beef on my last trip to Montreal, I gave the sister restaurant Liverpool House a try.
Like with Joe Beef, service was great and food was excellent. However, I think Joe Beef is significantly better than Liverpool House. The menu at LH is smaller and seems to feature the franchise's 'greatest hits' whereas Joe Beef seems more seasonal and experimental. I do appreciate that LH seems more bar-casual (not that JB is 'stiff' in any sense).
The lady and I enjoyed all the dishes and they were accommodating in modifying some dishes to suit her pescatarian diet. I finally got the lobster spaghetti as it was $35 (was told it's a smaller portion than the $55 portion at JB). It sounded reasonable for one person to take it on, so I ordered it as-is (as it comes with bacon). Even without our excessive ordering, the spaghetti should be shared between 2 - 3 people. The dish was insanely rich and decadent. The only 'downside' is that we were completely stuffed at the end, we probably would have enjoyed it more if we didn't over-order (our server at JB correctly told us to stop ordering after he felt we had already ordered 'enough'... and he was right).
There was a slight snafu and they messed up on our order and we got additional dessert for free. The complimentary basque cake was splendid. The only black mark on the night: we ordered the 'corn ice cream eclair' because it sounded interesting - it tasted like something you would get a county fair.
Overall, had a good experience at Liverpool House, but I prefer Joe Beef. Will try out their newer restaurant, Vin de Papillon (all 3 being on the same street) next time.