Its just a simple courtesy to notify in my mind. It is WV and everyone (unless its been taken away) has a right to bear arms, and in the process of carrying you may get stopped just as someone that isn't observing their right to carry.
In LE one of the most importiant things is Officer Saftey. With that being said, we all know there will always be people that run overboard with something and see no harm at all in doing so. One of those things happens to be when someone besides the cop has a gun or any kind of deadly weapon period.
It makes some Officers feel unsafe because there is a better chance of them losing control of the situation if things go south for whatever reason even if the person appears to be a 100% "good ole boy".
With that being said, again it IS NOT a law it is just a recommendation, and who recommends it? Just about any public safety personnel will tell you that they would like to know before finding out on accident.. Yes there are those that dont give a toot either way but they are few and far between.. Personally I don't get mad or excited either way when I encounter someone "packing" on a traffic stop, but I do make sure I thank them if they do advise me about carrying before I see it myself. Very rarely will you see what someone is carrying in a motor vehicle unless they are one of the few that carry openly. It makes me feel good seeing someone carry, I perceive it to be a huge crime deterrent. As we all know most bad guys (and gals) lol, don't OC
If a Officer askes for a permit and you are doing something that doesnt require one, don't get hostile just explain to the Officer what your up to. Just stay calm and again DON'T GET HOSTILE or start having diarreah of the mouth, it will not help a thing I promise. If you are within the law any reasonable Officer will move along to the situation at hand rather than taking your weapon, clearing it out, stripping it down, etc...
I hope this helps a little folks. Happy OC'n