I'll second that. I have some of Roy's work, and it's outstanding.
I met him at my local magic shop. He had a story about meeting some guys that worked at the Royal Canadian Mint; Roy was unsure if altering currency was a crime in the way he did it. The guys from the Mint said that legally, he was fine, and that they were big fans of his. They were impressed that he could gaff a $2 dollar coin. It's bimetallic, and they were impressed that he could keep the coin from coming apart.