They are, sort of.
The artist that Daz commissioned to make Victoria and Michael 8.1 used Texturing.xyz for the skin detail maps. As far as what you're linking, I believe Daz's shader/surface system fundamentally doesn't work most of the maps. I believe those are for Maya/3DS, Blender, probably CC, and maybe Unreal, etc.
You can fit them into your current maps on a model, but they're kind of a bitch to apply.