Just a couple of more thoughts (which echo some earlier comments)...
- When I've interviewed candidates for my department (IT), I don't think I've ever noticed their cuff links. I asked my wife who works in HR and she says she's never noticed a candidate's cuff links either during the interviews she's conducted.
- I do agree that my team's counterparts in Montreal dress better/more stylish.
- My wife suggests it's better to overdress than to under dress because if you overdress, at worst, they may think "Hmm, that guy's a little overdressed." whereas if you under dress, the thought may be "The guy doesn't even care enough for the job to dress appropriately."
- My wife's friend who works HR in a large engineering firm say all the engineers dress like slobs. Doesn't necessarily translates as to what to wear in the interview tho.