In post #1, the OP said no permit is required for open carry in WV. Not that i didn't believe him, but I cross-checked handgunlaw.us, and he is correct, with a caveat:
So it might have been reasonable for the deputy to ask to see some form of state issued ID. However, a permit was not required. A DL or other state ID should have been just fine.
The deputy was way out of line, and probably does not know his own state's laws on carry.