I would imagine openly espousing heretical beliefs on Elandre val'Assante's home turf would get you more than just "noticed." Seems to me a good old fashion burning at the stake is called for. As was explained to us in As Grey and Cold as Stone, there are some things you just don't do in the presence of the powerful.

It's one thing to be heretical in Grand Coryan. The Inquisition may hear about it, after all. It's another thing to be a Mourner infiltrating the Temple of the Pantheon (even more dangerous). However, if anyone is foolish enough to openly admit to being a Mourner and/or a self-confessed heretic on the steps of the Temple of the Pantheon, inside the Temple itself, or within hearing of Elandre herself, please let me know about it so I can write a very moving execution scene for them and officially remove their character from play.