I always thought it strange when we flew back from Bali with Garuda (Sept 2002) and were upgraded to Business, that we were given metal knives & Forks.
This was in a 747 where the easiest access was from upstairs (Business) and not Economy.
To me it would make more sense to have banned metal cutlery in business and have allowed it in economy. But then again, terrorists don't travel business class do they?