Tallarn Desert Raiders: Mukaali Rough Riders

I bought a bunch of Mukaali models some time ago, but never somehow managed to finish painting them. After all that time I finished them, eventually. Sadly, they have no own rules right now, as they had used to have in the Imperial Armour Book Volume Three. Nevertheless, I still can play them as standard Imperial Rough Riders from "Index: Imperium 2".