ok, i must say, i do not like ACU at all. i have found that it works though. there has been two times that people have literally disappeared in front of me while wearin ACU (no, im not blind). it works well at distances and in mountainous terrain.
pictures of ACU workin:
this is ACU next to Multicam:
note: ACU is in the center of the pic with Multicam to the right of it.