I'm almost in the same boat as you - except I bought another set of TPMS sensors for my winter wheels.
I never did the re-calibration as you're supposed to have to do when you install a new set of sensors... but the TPMS light never came on anyway. All last winter, even. I don't know if it actually works on Canadian cars? :p
2012 Blue Candy Titanium!
Former 03 Vibe, 96 Sunfire, 90 Prelude, 87 Civic