Skate skiers and fat bikers on the same trail: equal speeds

While this video (by Scott Brown, Mpls MN) may not display the best practices/etiquette for fat biking in winter (see the section on Best Practices for Riding on Nordic Trails), the skate skiers and fat bikers appear to know each other and are in a good-natured, informal competition.

Some land managers are concerned that fat bikers are considerably faster than skate skiers, making it unsafe for both. But the video shows that even at maximum speeds, skate skiers and fat bikers on a well-groomed, packed trail are neck and neck. And from this video, one could argue that the fat bikers look more in control than the skate skiers.