Burris makes and provides a shroud for their FF3 that may be left on in hunting and shooting situations. It has amber-colored lens filters on each end. Those cut down on glare if someone has concerns about the uncovered reflex lens glass spooking birds. I almost always leave my FF3 cover on the sight while hunting, however, I do so for primarily for protection from rain and dust.
I'm not too concerned about possible glare, but if you are going to wear full camo and camo your gun, I can see where reflection from the sight might concern some.
Vortex also has a sight cover but theirs is not see-through. Wish it was.