Phoenix Male Chastity's New Xannadu Design and Experiences

Has anyone bought or spotted the latest MCD from Phoenix Male Chastity, based in New Zealand?

The device is named Xannadu (that’s their spelling). It features two standout design elements. First, the back ring is oblong rather than circular, which seems designed to hold the testicles closer to the penis by letting them spread out instead of bunching up—a logical approach from a volume perspective. Second, there’s a roller tube acting as a spring-loaded cam within the cage. Site info suggests that if you start growing inside it, the roller pushes upward into the tube, preventing orgasm or perhaps even further growth… Does anyone have direct experience with this company or design? I’d really appreciate any insights…thanks!