In WV our code is written in such a way to be articulated according to officer perception.. sometimes our simple laws (compaired to other states) can be articulated in the "violator's" favor.
I am a fan of open carry and according to WV code just as u said the DNR code sort of leaves it open for perception. I have talked to a couple of high ranking members of the DNR and they say it is up to the officer to decide if it is concealed based on the totality of the circumstances just as with most things around LE
The way to look at this is to understand something you might think is legal can be articulated against u if the officer wants based on what he thinks "according to municipal code, state law, us code , and the constitution.. lol.
I was told if a person had small semi auto on his side as opposed to a 8in .44 Mag with a scope he would be just fine and i completely agree. Basicly if it feels wrong it prob is. Hope this helped.