La Cimbali Max, then Versalab, then Hedone Honne (copy of Versalab) and now the Grindie all use/used a conical pre breaker on top of a flat burr. 68mm DRM burrs I think.
So the concept is not new and some say the concept yields the best of both burr worlds: the thickness of a conical and clarity of flat burrs.
(The Monolith MC4 uses a pre breaker too but both burr sets are conical.)