Just wondering after going through the thread on using chess clocks to speed up slow players (and horde players), does anyone know if movement trays allowed in 40k tournies? Has anyone seen them used in tournies?

I could see the benefit for faster deployment and movement of horde armies like tyranids with lots of little guys. The trays would probably have to be abandoned at some point because of terrain or assaults but might provide enough time savings early on.