Condensation is not generally a problem in the cold weather, as it will when you bring your cold camera back into the house after being outside. If you'll need to shoot indoors, just put your camera in a closed Baggie before you come into the house.
It was much worse for me when I visited Mobile AL this summer. I ran out of the house to catch the morning sunrise and some fog, only to have my cool camera (from the A/C) immediately fog up fm the 90% humidity and stay that way until long after I lost the shot. The fix here would have been to leave the cameras out overnight (perhaps in the car) so it never cooled down.
When working outdoors in the winter, I not only keep the spare batteries buried close to my body, but try and keep the camera inside my parka or jacket as much as possible. Of course,cruise requires sufficient room for your body and camera.