yes

No. I do Warhammer and I originally thought that it was a nerds only thing. This however is a completely untrue stereotype.

There are actually many girls who do warhammer, a few tradies, policemen and your regular people. Many fathers get their wives and eventually kids hooked in to it aswell.

Saying Warhammer is for nerds is like saying that anyone who does any of the arts are nerds aswell. Warhammer is about sculpting, creative ideas, converting, landscaping, painting and strategy. You may think what you want, but is warhammer fans are nerds, than so are many, many other people.

The simple answer is - you ask them to show you their licence card.

But that's not the only thing you need to do - you also need to investigate whether your job is covered by their licence. Licensed tradies know what their licence covers and usually respects the rules (because if they don't obey them their licence will be revoked).