I wonder why they didn't just call it graphite sole, graphite is a polymorph of carbon anyway. Graphite, has the same chemistry as diamonds, but different structure. That is why it's soft, unless bound into fibers. Then the graphite becomes very strong and durable. So if thats what they did for this board, and it probably is, then it should be at the very least able to withstand a typical day of riding.
Scio tu molestissimus.