Thank you, fellas.
Bob, I've only made a couple hollow limb bows and it's always hard to tell which factors are differentiating one bow from another but I do think the design makes for a more efficient bow from my limited sample group. The design is really about getting the most from a high crown stave. It redistributes the stress that gets concentrated by the high crown and spreads in out across the width again. It also reduces the limb mass by getting rid of the dead weight that occurs from that concentrated stress. Even if the gains from that are marginal (which I don't think they are) it at least looks really cool!