The restaurant's owner supposedly started this place after he returned to Montreal from a trip to Southern California, where he experienced the delight that is In-N-Out. So he sought out to replicate the experience in Montreal. Unfortunately, they don't do animal style here. All in all, it's a good replication in terms of taste, but you should expect to pay more than your typical trip to In-N-Out.
I highly recommend getting the burger with their special sauce. It's obvious that the special sauce (and In-N-Out's spread) is Thousand Island dressing, but an In-N-Out burger (and it's imitators) simply cannot be an In-N-Out burger without that spread. With that caveat, they do a great job imitating the In-N-Out burger. The spread tastes right, the bun is well toasted, and the burgers are cooked right.
The fries here are fantastic, better than In-N-Out's fries (INO's weak point IMO). The fries are thick, unlike INO's thin fries. The fries are crispy and not floppy like INO's. And they fried it in oil that actually has flavor.
The milkshake is okay, but I like INO's better. INO's milkshake is thicker.