Only in certain Congregations here in the U.K were beards frowned upon in any way. I grew mine in early '75, 6 months or so before that W.T came out, interestingly I had at the time received a letter from H.Q in N.Y saying that they could not make Rules for the whole World as to dress and grooming, and that the local BOE would make any decision on appointments, taking in to consideration local attitudes.
I was appointed M.S later that year, with a beard, I kept the beard and gave even away Public Talks etc. for about 13 years after that.
I also grew my hair long for a while, down to my shoulders, I would not have got away with either in even some neighbouring K.H's. My Congregation was a one off, known as Rebels, one C.O told me on his first visit that other C.O's had told him they didn't like coming to us, because we questioned everything the "Society" said.
If I hadn't been in such a liberal, rebel type Congo. I would never have stuck it for as long as I did, I'm sure.