I've been working on USD, and I've put a demo model packed with those USD cool features! Triple Material set (MatexiaX, RedShift and USDPS) geo and material variants, and a bunch of interesting goodies! Perfect to work with USD based pipelines on Maya, Houdini, Unreal or Onmiverse (You can also load it in C4D or Blender, but ...). It is posted as a freebie in my product page (FAB link by now). I'll be posting more models!