MikeJ - thanks. I did indeed not think of that.

In regards to geometry swapping, RoyG (not sure if he's active in the Poser community any more) once made his "Dial-a-tile" - it was back in Poser 4 before we had tiling materials, and what it did was exactly that. Load a plane with a lot of swappable geometries, each with their own mapping.So you could go from a 1x1 pattern to a 64x64 (can't remember exactly how high it went)  pattern, invisible for the user. Very convenient. The texture was just loaded once and became tiled when the geometry was swapped to another UV mapped version.

Now, this was back in Poser 4, and the plane wasn't all that memory intensive of course. But it was very easy to use and didn't feel like it bogged Poser down.

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.