Since summers in Canada are very short, we end up wearing warm clothes for a good part of the year. In autumn, we try to protect our wrists against rain and wind. In winter, we cover them so as not to let the cold and the snow get under our sleeves.
Thumbhole cuffs can simplify our lives and help us in our tasks. For example, when we are at the wheel, the sleeves may go up, which is not at all comfortable. Adding thumbhole cuffs to sleeves will solve the problem and will no longer leave our wrists bare.
I advise you to take a look at the cuffs of your coats and perhaps consider to replace them for a better comfort.