LandRollers are cool. They have large wheels which roll over obstacles more smoothly than inline skates. It’s similar to the advantage of the larger “29er” mountain bike wheels.
For Nordic skaters there are drawbacks. The outboard wheel design interferes with the natural pole plant location which can cause a fall. They don’t have the traction of a 4 wheel inline skate, so they can’t generate as much energy in an Alpine ski turn. In a turn, the angle of the inside skate wheels means they don’t contribute much control or energy. So turns are more a one skate balancing act than on inline skates. The wheel angle also compromises the “double push.”
Having said that, they are very beginner friendly. I’m sure some will adapt to these limitations and go have fun. Olympic speed skater Apolo Anton Ohno and “Dog Whisperer” Cesar Milan love ’em. Visit LandRoller.