I agree that the nautiloid is not the best place for a Religion check. In the heat of the moment, it makes sense that your character may not be focusing on the armor or whatever.
But we're talking that at NO time does ANYONE notice the armor or question it or anything and NO ONE gives you ANY background on Shar at any point. You have to read books and tomes to get basic information on one of the most important goddesses in the world and game.
In BG 1 and 2, nobody cared about this. Why? Because Shar was not important to the story in those games. In BG3, she is one of the MOST important since here is SH, a major character who is her cleric dressed in armor of a Dark Justiciar.
A roll should be made when you first meet her on the beach, and there should be more explanation, at least basic explanation, on who Shar is. And if they're going for an "Oh my gosh, you're a Sharran cleric of evil?" Moment, they need to put different armor on her and hide her background a bit more. Bottom line, either they need to hide her background and have the Aha moment, or they need to have a Religion check and people make some sort of big deal out of her armor.
