What I like best is that cams & cranks can be stacked as modules as well, without requiring specific forgings or billets...that alone makes or breaks the concept.
Segmented cranks I've seen and dealt with, but no experience with a segmented cam. Normally there's not much room either on top for an OHC or in the block for such an animal.
I frankly don't remember how the industrial engine company did it with their V16, but thinking about it now, it must have been segmented like the crank. But doing that with a big stationary engine is one thing - doing it with a compact automotive engine where space is at a premium is another. It'll be interesting as h*ll to see how you get on with this.