All the marathon tires are very durable and long lasting. I have the allmotion tubeless version and no visible wear after long time. So they all are great for people riding a lot, or little.
They all are on the heavier side due to extreme flat protection. Mine are tubeless anyway, but since I used the Marathon I never had a flat.
Not sure about the MTB version since there also is traction under varying conditions to consider and many MTB tires are specialized for mud, or sand etc.