I think this might be the best Montreal Smoked Meat in Calgary. It is called a "deli", but this is a bit of a misnomer as they mostly do sandwiches, and of the sandwiches they mostly do smoked meat - they also have great shakes.
I usually get the Ruben, it is made with what appears to be quality ingredients. You get a choice of how many ounces you would like for the meat (6, 8 or 10) and the type of mustard (apparently homemade, but somehow i doubt this). Inside and outdoors, seating is very limited. Prices are a bit high in my mind.
if you are in the marda loop area, dining choices are not limited so IMHO, visit other places first, unless ofcourse you need a smoked meat sandwich