Actually I've just received one. There are meant to be test cages. Read my comment about them here: https://www.chastitymansion.com/forums/index.php?threads/my-test-cage-arrived.49794/
I was referring to his imitation kink3d cages, the HF001. I did read your thread about the test cage and it’s awesome that’s he’s doing that. I have a ba-20 and it’s been great in the summer but now in the winter I’m experiencing chaffing on the underside of my shaft at the cage entrance. I suspect it’s because the inseam of my work pants is pushing everything into my body so I may try a test cage with a bigger gap.