The silly explanation given for the oppressive facial hair restrictions is that it prevents the JW from looking like a minister.
The truth, of course, is that they just want their drones looking as "normal" as possible, so as to distrubte the most books.
I read, I believe it was on here, that brothers in some scandanvian country were allowed beards, as people considered beardless men effeminate.
Then, in my most recent pioussneer school, the brother was telling us how the way we do things in the US isn't universal (something to do with preconcieved notions and prejudices) - and mentioned that brothers among some native tribe or other were allowed long hair (even to the waist!), as among that tribe, cutting the hair meant that one had disgraced the tribe, and no one would talk to them.
Obviously, the WTBT$ will do whatever it takes to keep the $$$ rolling in.