KOM - the staff of vbulletin.org have every right to know whether you are a licensed member or not. Although, since staff are able to easily identify anyone not showing up as licensed, the chances of a staff member asking this is relatively slim.
If someone approached me for help with their vBulletin (outside of vbulletin.org) you can bet your arse that the first thing I'm going to want to find out is if that person is a valid license holder.