One of the (few) advantages of the IVO is that you can use it in 2 blade or 3 blade configuration in the same hub. If Max wants to try one, he could buy just a hub from IVO & get Todd's blades.
Charlie
(Been there, done that (on a Lyc); got the lousy cruise speed T shirt. BTW, never, ever, consider one for a Lyc, on *any* airframe.)