I snapped a few series of pictures of the conversions that I used as conscripts for the Adepticon army. I can't remember if these are from Wargames Factory or Warord Games... but the original minis were the Ancient Celts.
By adding a few spare Imperial Guard bits (not calling them by the 'new' name), they instantly became more of a 40k creation.
I gave them the striped pants to create the impression that they were not quite worthy of the tartans of their loftier battle brothers.
They still had their battle woad, however!