So far, it has not been found to unbalance the game to allow Camouflage to work under all conditions, even when combined with things such as Smoke, Haze (an environmental effect of our group's design in which a progressive RC modifier is imposed of -1 at MR, -2 at LR and -3 at ER) and/or Night Fighting. In fact, it seems to add to the flavor of the game, allowing Mirrormen (and similarly camouflaged units) to take advantage of their "fluff."
We still do not allow it to combine with Cover.