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Looks like it use a motor similar to the Torqueedo "electric outboard". It would be ok in small chop if it has some sort of auto ride control (like big hydrofoils do). One issue is hitting debris at speed, The foils are probably not up for hitting a log or even a big stick at speed. If a foil comes off or even gets bent the ride will get interesting really fast.
A long time ago they tried running hydrofoils between Seattle and Vancouver Island. It didn't last very long because the foils kept getting damaged by hitting stuff in the water. The boats could not travel fast if not planing. If the foils got damaged on a trip it would have to finish the run (or return) at hull speed. In that case conventional ships making the trip were faster and more reliable.