Firstly our TT group resolved the disagreement but I found it to be interesting enough to put up here to see what others think.
Scene: Proximios ex Mercere and prob next Logothete of Theban tribunal and infernal agent, is being asked for help by our characters, one of which is a Mercere magi. The Mercere magus has the Virtue Pierving gaze and was attempting to hold back information from Proximios, not because he even suspects Proximios is infernal. The Mercere is somewhat resentful of those in power, though he remains respectful of their role in the Order, however it doesn't stop him from shaving the truth.
So he purposely tries to pretend as though he does not possess a certain message from a enemy magus, which Proximios is asking to be handed over. Now as the players know, Proximios is asking this with the intent to turn it over to the Quaesitors in their investigation of the enemy magus' crime. The Mercere magus wants to keep the message so that he can take it to the ghosts of dead magi, killed by the enemy magus.
Conflicts about right and wrong and the law was very well and quite entertainingly played out.
Here are the questions: Would his Virtue Piercing Gaze be active at all times and such is a passive advantage; anytime he stares into the eyes of someone they feel it's effect? Or will this Virtue only be applied if the subject is trying to actively deceive or lie to the person with the Virtue?
I reasoned that while Proximios may not even have intentions of his own to use the message in any infernal nefarious way, he was simply following the regulations set by the Mercere house as a whole, and even though he was telling no lies at all, I said that he still must roll to not feel nervous when the Mercere magus stares at him.
The virtue states "By staring intently at people you make them feel uneasy, as if you are peering into their souls. Those with ulterior motives, uneasy consciences, or lying tongues must make rolls against an appropriate Pers trait, Guile, or whatever the SG deems apropro, to remain calm." ect ect.
I believe that Proximios was required to make the roll to simply not feel somewhat agitated or fearful that the Mercere magus might be hiding information from Proximios because he suspects Proximios is infernal. I mean that is a HUGE secrets to have within the Order of Hermes and I think something subject to the terms ulterior motives (why he wants the message) or uneasy conscience (yeah he may wholly be evil and infernal and likes it, but there must be some guilt or worry of being caught right?)
What say you?