Thanks everyone for the replies, and rickair7777 for the thoroughness. I've heard several people say that voice ID is common, but I haven't seen it in my experience. I'm curious to hunt some down; Twin Wasp, you mentioned that Ardmore had voice ID.....do you or anyone else know of any other VORs that had/have this in Kansas Oklahoma area?
And ddd333, the AIM does mention that either voice or Morse code is legal to ID a VOR.