Unlike berd, these aren't compatible with regular hubs and nipples, only the same type as the standard carbon spokes. Berd are fully compatible with standard nipples and hubs.
I haven't seen any berd tensile deformation graphs, but these are weaker than steel spokes. Peak Torque has a set built with the default h-works 20 spoke hubs and they are comfortable, but so flexible they rub the chainstays on his bike. You can get 24 spoke MTB hubs of this type, but it's harder to get your hands on them and they're heavier.
Btlos offer these tho, if you're really set on them.