I live north of Toronto, track my car just like you, and have run semi-aggressive pads in the winter. I attempted to run my Endless MX72 in early winter a few years ago (just got lazy and didn't switch them out after my last day at TMP). By December I couldn't wait to get them off. Not because they didn't stop the car, but the rotor wear and noise. Not 100% sure about the DS2500's, but the MX72 is noisy as heck when they're not driven hard regularly, and consistently leave pad deposits on the rotors which causes vibration in the pedal (this is not an issue if you beat on them now and then and make sure there's a nice material transfer on the rotor). I ended up ordering a set of Endless Premium Compound for winter/daily duties and switch in the MX72 for track days. I give the rotors and pad surface a quick rub down with garnet paper each time I switch them, and drive for 2-300kms nice and easy so they settle in.
In short, you can drive on pads like the DS2500 in winter, but there might be annoying drawbacks.