I commute with a fat bike. That's because half my commute is through a park trail where it is not maintained in the winter. Even today with the overnight ice rain it was a challenge. But with ice and snow, it was still way better than it was when I was using my beater mountain bike. Before I had the fat bike, the snow and ice in the unmaintained MUPs restricted me to the roads, which at one section was really dangerous with cars zipping at 80kmh.