Lavoce interesting exit angle/phase plug design

Judging from the cutout of Lavoce's 1.4" drivers, we can see a very interesting phase plug design where the phase plug seems to end right at the start of the driver exit.
Such a design with no exit angle should make mating to a horn/waveguide smoother. Has anyone tried these drivers?

Screenshot 2024-12-15 at 12.35.26.png