Ambush, UBGL and Multiple ROF CC weapons.
The Striker only gets the insane bonus's once, if he has to engage his target for more than the primary attack the Multiple RoF of the Fremen's Brass Knuckles will vastly outweigh the slightly reduced damage and CC.
Ambush, they can use their second reserved action to continue pummeling whatever they charged offa wait. or they could just shoot, lots.
Havoc Grenades.
I've taken these guys on several Space-Hulk style boarding missions and every time they've either ended up kings of the gang-beating (thouroughly embarassing Mishima on several instances) or have held entire swaths of corridors just by sheer, Ambushing, intimdating presence.
You'll just never be able to convince me that an RC inferior, single ROF, non-clinically insane troop can top a mohawked madman.
-PFC joe