Thank you for all of the great replies.

I went to the links that Safety gem provided and found them very informative.

It seemed that OSHA's position was that unless the manufacture specifically certifies that the hard hat will meet the ANSI standards when worn backwards, the brim must be in the front.

I then went to MSA's web site, the manufacture's web site of the hard hats that we wear. On the web site they had a list of FAQ's. One of the questions was, in fact, "Can I wear my V-Gard helmet backwards?". The answer was that the hard hats that we wear would meet the ANSI standard when worn either way.

The issue of how people percieve you or treat you when you wear your helmet backwards is, so far, a decision that would be left up to the individual.