Started vh/vh ungrim iranfist campaign. Should i go with slayers on his army for mid/late game or just go with regular iranbreakers/cannons/irandrakes/grudge gyro/grudge thunderer spam? He does buff all sort of slayer units but slayers are fucking dog shit so im just wondering if his buffs are enough for mid/late game.

ps. I knew i recognised the voice actor of ungrim, its cleaver from witcher 3.