My Book of Randomness

Magnus is half demon. Does this mean he can get stuck in a devil's trap? Like Dean, when he was half demon, devil's traps still had an effect on him. Also wouldn't that mean Shadowhunters could get stuck in a ring of holy fire, since they are part Angel?

(Just to be clear I know that Dean was a full demon at one point. I'm talking about after Sam injected him with human blood.)