Julian the Apostate reigned from 361 to 363. St. Ambrose became bishop in 371 A.D.
There is no unqualified endorsement of any of the church fathers. What you stated is that he is not considered a Church Father, which is false.
Reading from Orthodoxwiki:
"The
Fifth Ecumenical Council, held in Constantinople in A.D. 553, listed Augustine among other
Fathers of the Church, though there is no unqualified endorsement of his
theology mentioned (just as there is none for most saints of the Church):
We further declare that we hold fast to the decrees of the four Councils, and in every way follow the holy Fathers, Athanasius, Hilary, Basil, Gregory the Theologian, Gregory of Nyssa, Ambrose, Theophilus, John (Chrysostom) of Constantinople, Cyril, Augustine, Proclus, Leo and their writings on the true faith.[1]"
But since his works were translated into Greek, they weren't widely known in the Orthodox just as the Catholics know little about the Greek Church Fathers.
As for the question of whether the veils covered their heads or their faces as well, there is some disagreement. Tertullian felt it applied only to the head. But Clement of Alexandria insisted: "Let the woman observe this, further. Let her be entirely covered, unless she happens to be at home. For that style of dress is grave, and protects from being gazed at. And she will never fall, who puts before her eyes modesty, and her shawl; nor will she invite another to fall into sin by uncovering her
face. For this is the wish of the Word, since it is becoming for her to pray veiled." [Clement, The Instructor 3.12]