Yea, it does interest me, the idea of a 1.5 way. Although baffle step takes place a bit above the “200hz” point. I remember an old pdf by Klipsch showing the effects of putting a heresy on a stand, there was basically a huge hole below 200hz, perhaps this baffle step is going after that.
I noticed L0rdGwyn had a pair, then sold a couple of months later.