Either way the hexagonal planes would end up more or less perpendicular to the planet's north-south axis. Not all geophysicists are in favor of such a simple picture, though it's still just a hypothesis. But if it's true, it could explain several puzzles about the magnetic field, which is generated by turbulent currents of iron in the outer core. The inner core can't generate a magnetic field on its own, but the magnetism of the outer core induces a field in it, just as a permanent magnet can temporarily magnetize a paper clip. And if that direction didn't perfectly match the field from the outer core, Stixrude and Brad Clement of Florida International University have argued, the inner core could skew the field seen at the surface.
Several things are askew about that field.
All this is highly speculative, Stixrude and Clement acknowledge.