Paul Stuart clients: Tell me about the "Paul" model fit
Call Stuart again. Ask for Ralph. He's the Phineas Cole designer/merchandiser. If he doesn't answer, or return a VM, ask for the 2nd floor mngr, John, and he'll break it down for you.
Nothing in that store is as "trim" or as "fashion" as Phineas. So at least there's a jump off point for you.
Moral of the story: Try...to never buy tailored clothing online unless you can 1) afford the time and $ for exchanges, tailoring, returns, etc... 2) cannot absolutely get to Chicago or NYC to try Paul Stuart clothing on in person.
Phineas Cole and the "Paul" model are both made by Samuelsohn (the canadian manufacturer you mention). The italian made suits are "Stuart's Choice".