Yes, I've used them.* But mine is more of a "test the technical
  limitations" type thing. I want a pixel-to-pixel, no compression
  correlation between pixel and voxel, all in a single image. In
  other words, if I hover over pixel 10028, 28394* and i do: /tp
  10028 65 28394 I'll end up in the same place.   I'm thinking of
  future compression-free computer technologies.* The compressions
  and shrinkings are so commonplace, we rarely stop to question
  the necessity.* But they're stopgaps, making-do while computer
  capabilities catch up to our needs. With enough capacity, there
  should be no need for such things, eventually.