Code:
<VARIANT_MESH>
<SLOT name="base" >
<VARIANT_MESH>
<<SLOT name="beards" >
<VARIANT_MESH_REFERENCE definition="VariantMeshes/_VariantModels/man/skin/barb_painted.VariantMeshDefinition" />
</SLOT>
<SLOT name="facial_hair" >
<VARIANT_MESH_REFERENCE definition="variantmeshes\_variantmodels\man\hair_beards/barb_hair_beard_brown_briton.VariantMeshDefinition" />
<VARIANT_MESH_REFERENCE definition="variantmeshes\_variantmodels\man\hair_beards/barb_hair_beard_brown.VariantMeshDefinition" />
<VARIANT_MESH_REFERENCE definition="variantmeshes\_variantmodels\man\hair_beards/barb_hair_beard_brown_celtic.VariantMeshDefinition" />
<VARIANT_MESH_REFERENCE definition="variantmeshes\_variantmodels\man\hair_beards/barb_hair_beard_darkbrown_briton.VariantMeshDefinition" />
<VARIANT_MESH_REFERENCE definition="variantmeshes\_variantmodels\man\hair_beards/barb_hair_beard_red_dacian.VariantMeshDefinition" />
<VARIANT_MESH_REFERENCE definition="variantmeshes\_variantmodels\man\hair_beards/barb_hair_beard_red_knot.VariantMeshDefinition" />
<VARIANT_MESH_REFERENCE definition="variantmeshes\_variantmodels\man\hair_beards/barb_hair_beard_red_celtic.VariantMeshDefinition" />
<VARIANT_MESH_REFERENCE definition="VariantMeshes/_VariantModels/man/hair_beards/Long_Hair_Long_Beard.VariantMeshDefinition" />
</SLOT>
<SLOT name="props" >
<VARIANT_MESH_REFERENCE definition="variantmeshes\_variantmodels\man\props/brit_props_bronze.VariantMeshDefinition" />
<VARIANT_MESH_REFERENCE definition="variantmeshes\_variantmodels\man\props/brit_props_silver.VariantMeshDefinition" />
</SLOT>
<SLOT name="helmets" />
<SLOT name="clothing" >
<VARIANT_MESH_REFERENCE definition="variantmeshes\_variantmodels\man\trousers/celtic_patterned_trousers.VariantMeshDefinition" />
</SLOT>
<SLOT name="cloaks" />
<SLOT name="greaves" />
<SLOT name="shield" attach_point="weapon_03" >
<VARIANT_MESH_REFERENCE definition="variantmeshes\_variantmodels\man\shield/belgae_hex_shields.VariantMeshDefinition" />
<VARIANT_MESH_REFERENCE definition="variantmeshes\_variantmodels\man\shield/brit_hide_pattern.VariantMeshDefinition" />
<VARIANT_MESH_REFERENCE definition="variantmeshes\_variantmodels\man\shield/brit_deal_pattern.VariantMeshDefinition" />
<VARIANT_MESH_REFERENCE definition="variantmeshes\_variantmodels\man\shield/germanic_long_wooden_shields.VariantMeshDefinition" />
</SLOT>
<SLOT name="weapon_1" />
<SLOT name="weapon_2" attach_point="weapon_02" >
<VARIANT_MESH_REFERENCE definition="variantmeshes\_variantmodels\man\weapons/celtic_axes.VariantMeshDefinition" />
<VARIANT_MESH_REFERENCE definition="variantmeshes\_variantmodels\man\weapons/celtic_swords.VariantMeshDefinition" />
</SLOT>
<SLOT name="weapon_3" />
<SLOT name="weapon_4" />
</VARIANT_MESH>
</SLOT>
</VARIANT_MESH>
As far as I can tell there is no reference to a skin in their variantmesh. They have no skin.
Look at the slot names.