The URCHINs are there for some stun while the RM3 does the dirty work. I got fascinated by the ROC4 anyway, so I've been using it for most of my current ACs. I might as well keep the tuning for the boosters from changing, it doesn't really affect me anyway (hopefully, otherwise I'm pretty much gonna be a fried goat in my AC).
EDIT: Anyway, thanks for the vid, NiX
EDIT: Anyway, thanks for the vid, NiX