I am not entirely sure it will. It doesn't have any Orruks on it, only Grots and a Troggoth. The Hobgrot Slittaz have the Hobgrot keyword but not the Grot key word, cause they aren't Grots and in the lore fight with the kruelboyz. I am starting to think this Sloggoth is specifically there as is, like the last of the Gitmob Grots, literally, riding around on a Troggoth, which is why they can only be in Big Waagh. Lore wise it makes sense. They have no leader or allegiance, and since there isn't an Orruk riding the thing bossing them around, they only join the Big Waaghs when the energy is pumping, hence "friendly" and boy do I hope this stays. It makes sense thematically.