There really is something for everyone on the menu at Reuben's. Now, yes, this place is kinda touristy in that it's in the heart of downtown where all the tourists are. However, I didn't feel like it's a tourist trap. Like it didn't feel like those places where the food is subpar but you "go for the experience". It felt like this place is probably well know for being a little touristy but you get somewhat of a local experience.
Food- Make sure you try the smoked meat. They really have some of the best smoked meat I tasted while in Toronto. It was so moist and fatty that it melted in my mouth. If our luggage wasn't already packed I probably would have grabbed a few pounds to take home.
Service- From the moment we walked in we were helped in some way. Our server went on break during our breakfast, but we were definitely not neglected. The replacement server was attentive and even chatted with us for a few minutes. He gave us some local insight on attractions to check out and which ones to skip. Unfortunately, we were grabbing breakfast on our way to the airport so we weren't able to check anything out. But, he definitely gave us a reason to come back to Montreal to check out the Jazz Festival and the Grand Prix.
Final note, yes, it feels touristy, but you should do it.