We're having this same debate for our new build. EVA foam's padding is so nice under foot, but it's durability is making us think otherwise.
We had both on our
aluminum boat - which is typically way hotter of a surface temperature to
fiberglass construction - both in a whitish color. The EVA foam was cooler to walk on than the Kiwi grip. But that's probably due to the insulating properties keeping us off the metal.
Kiwi-grip is more durable. Both are difficult to keep clean.
4l of kiwi-grip covers 2sqm and weights about 2kg.... or about 1kg per sqm