At least not in civvies. In my first Bn in 1993-1997, it was mandatory you wore those on ranges and such, plus, most 1st Sergeants thought civilian eyewear in uniform was eccentric, so even in garrison, you'd see a lot of guys wearing them things. No civilian substitutes allowed in the field or on ranges, and for a good portion of the Battalion, in garrison while in uniform. When we deployed, you had to have 2 pair, plus your gas mask inserts. We hated it, but followed the rules.