It’s not the same tyre, but I’ve been running a protection apex trail king the last couple of weeks.
In contrast to contrast to protection of old which was like everyone else’s regular sidewalls, it’s now comparable to schwalbe snakeskin and as per Gotama above, the apex strip does seem well considered. Overall, it’s like a supergravity-lite sort of casing.
Tubelessing straight out of the packet was a list cause though. The apex insert holds onto the fold line, so I let it rest on a spare rim with a tube overnight. It went up on my LB 35mm carbons the following day with just a track pump, and I’ve not seen a single weep of sealant anywhere.