Hej Plummet,
Everything is anecdotal. no one has any science.
I've noticed the boards I've made with Evo like bottoms cut through chop smoother, less slamming. They seem to float over the water when flattened out going fast on a reach and transitioning into a turn. I've found them to be really quick turning, almost squirrelly until you get used to it. Very little input needed to get them to turn.
The bottom has a 5-8mm concave thru the nose and middle, with additional double concave inside that, that fades somewhat towards tail. Then the tail has V, with channels added to double concave in tail.
They are very thin. The nose is 8mm, the center at tail 15mm, mid of board 15mm. Deck has over 10mm concave. They still have a good amount of flex.
Challenge to glass and Sand.
I set them up as quads, and I think the fin set up and spacing is vital element.
These boards are made for Northern Europe shitty windwaves and chop.