The Canadian suit maker at Paul Stuart is almost certainly Samuelsohn from Montreal. My local men's shop recently replaced Hickey Freeman with Samuelsohn. Coincidentally, the HF sales rep also switched to Samuelsohn. At the first Samuelsohn trunk show, I asked the rep about Paul Stuart's relationship with his company. He said that Samuelsohn mostly acts as a cut-make-trim shop for Stuart. That is, Stuart provides it's own cloth and patterns, Samuelsohn cuts, makes, and trims (zippers, buttons, linings, etc.) it into garments. The upshot is that the non-Paul Stuart buyer of a Samuelsohn suit does not have the benefit of the cloths and models you can find at Paul Stuart. There are two coat models in the Samuelsohn line that Paul Stuart developed several years ago (low button-stance, wide lapels), but has abandoned. In a gesture of kindness, Stuart allows Samuelsohn to sell the obsolete models to their "regular" customers.