Hey, they issued me tattoo's when I joined the Navy
I have ten of them right now and I worked my way up from production electrician to engineering to PLC programming.
However one of them is a tattoo of an Irish wedding band (less conductive than gold), so if it becomes a safety issue that is one thing. I have seen more fingers stripped to the bone by rings than noses or ears or lips taken off by rings in those places.
It's whats between the ears that counts.