Hi Evo,
I gave up waiting for the adapters you mention. I ended up fitting a conventional sling swivel to my Sauer. It has to be the metal screw type so that you can put a nut on the inside of the forend. I made my own as I have a lathe, but I have seen them advertised in the bushwear catalogue.
You will need to counter bore the wood slightly so the nut fits flush allowing the long securing bolt to be accessed with the allen key that came with your rifle. One other consideration is that you warrantee will be void if you mess with the wood, so best to wait till the rifle is two years old if this worries you.
If you need any help p.m. me.
Cheers,
Buckup.