Does cripple/onslaught work that way? I know that the "dive" ambush is similar, but if I remember correctly, if I tried to "ambush %1 cripple onslaught", when it worked, it would usually still be a weak crippling ambush.

Also, I could see a use for a "disarm/drive/fade" ambush if it would string together correctly. Hit them, then fade into the wilds and go back to get the weapon.