Are there threaded holes on the back side of your brace? My fork has the spot where the holes should be but they aren’t drilled. I’d like to add a bolt-on mudguard so I may drill and tap my own.
My wife's 2020 Marin Hawk Hill 3 came with the Z2 from factory, it has the same situation yours does. Locations where the holes could/should be drilled and threaded, but they are solid still. I don't see any reason you couldn't drill and tap them properly. It would probably void warranty... If you try it, I would love to see photos of the results.