Yup. I'm often debating between Burris Sig rings or Talley LW's. I wish Talley would make the LW's with synthetic inserts. Like you say, that would completely eliminate the need that some guys feel to lap their rings, line the rings with electrical tape to prevent ring marks, and would also give the advantage of adding some elevation (which would be variable, depending on which inserts you use, and what the ring spacing is like) without having to go with a heavy 20MOA rail/ring setup.
