Mindcrafters playing they early game benefit more from True Berserk than anyone else. That is, as long as two conditions are met:
1. you are fighting something that you can confuse (not ants)
2. you don't have good armor, so you don't lose much by not wearing it
True berserk is especially great if you are fighting some early vault of orcs, gnolls or the like. If you constantly keep your enemy confused, the risks from True Berserk are minimal and very much worth it.