I am intrigued by this too, as I did consider it when I was looking around for Y Shape rear options. Does look excellent in fairness and would match my Ovano and my hex okay side panels.
From my experience of the hex side panels, they do tend to grab dirt in the raised hex sections, as they were designed for grip basically. If you run your hand over them they collect oils and dirt from skin, so dirt from shoes will definitely show up I reckon. The raised hex section can scuff as well, so you they might not stay as black as you might like.
This is just my thoughts based on what I have though, so not based on experience of having the flooring.