Great minds I never seen yours but I'm working on the same thing ( The wet thing got me ). My hoofs are/where the solid rubber and I was about to take the rubber off but brought new hoofs and there like yours with the metal aready on !
You use glue where I was planing on a thin layers of rubber/cloth ( metal, rubber , nails , rubber then Hoof ) it would make quieter.
I work on on machine with rubber roller that we get recovered and was going to see them about coating metal plates and many adding a tread pattern.
Like I said the new hoof I have are metal/rubber so I'm about to find out about the rubber covered plates ASP !