Inquisitor's vision
When Sazed intentionally gets himself captured by the Inquisitors to rescue Vin from Kredik Shaw, they strip him of all his metalminds by taking away his jewelry. I always assumed that was so Vin wouldn't have access to any metals through him.
But Sazed had also swallowed some of his Feruchemical metals.
Can Steel Inquisitors actually see metals inside someone's body? I get why Sazed would do it since he didn't really know how their vision worked, but wouldn't the Inquisitors have noticed the metals inside him once they captured him? If they can see them, why didn't they think it was odd or force him to get rid of them?