Yep, that seems to be the case. Like bonesplitter Arrers, Morboyz etc, so should also have their own rules which means that moonclan grots with bows became more viable option than before. There where talk in one youtube channel that Gloomspite Gitz have 7 battleline units, depending who leads the army etc. I think these 7 are spider riders, grot infarty units and trolls.