We still can't add them as they are (correct me if I'm wrong Raylin).
Pino used the normals on the mail and plate textures to add shadows, and he overdid it completely, resulting in dull armor parts with no reflection whatsoever at least in BRF preview. Simply disabling the normals make the armors eye-cancerish bright, but still better than the drab version.
Different story on the leather armors, which look much better with the normals in BRF.
It all comes down to whether the stuff looks different in-game, there is still some testing left to do.