No we never discuss it at all.
Bad direction for a conversation to go in.... my husband will participate, but he gets defensive and will walk away if it goes on for more than a minute. He's more likely to get involved if I'm venting about an argument with someone else who's a theist. Then, he is on my side and fine with listening. If it's about him, his beliefs, or directed at him.... No. It's just better to avoid talking about his faith. We mostly pretend it doesn't exist except that I'm not allowed to say goddamnit. Used to be the only "bad word" that I used. He banned that one, and now I sound like a sailor. lol