Go for it.
If you want to discuss that in a Catholic Caucus, you should have every right to do so without interference from any Calvinist or Lutheran. If the Calvinists and Lutherans don't like it, they can discuss their distaste for what is going on in your caucus on an open thread or they can stay the Hell away from the caucus for which they are not a member.
How hard is that?
If those were the rules and you had a Catholic Caucus, I would stay away and let you say whatever you wanted about my religion or my theology and we can avoid turning that caucus into a free-for-all, like we see so many threads turning into these days. Those who are insecure in their faith or who are lousy debaters can go into a caucus and feel free to discuss any issue they want without fear that some "Anti" is going to make a fool of them on the thread.
I would think that Catholics would welcome a retreat from contentious debate, where they would be free to CAUCUS among themselves and where they could leave the heavy lifting to those who are not afraid of vigorous debate, and not proned to pushing the abuse button everytime their sensibilites are offended.
If we are going to have caucuses, then by golly they need to be considered caucuses. You shouldn't have to be afraid that you might offend some other faith while you are caucusing those who are in agreement with you.
I would think that Catholics would welcome a retreat from contentious debate, where they would be free to CAUCUS among themselves and where they could leave the heavy lifting to those who are not afraid of vigorous debate, and not proned to pushing the abuse button everytime their sensibilites are offended.
Scripture tells us you will be known by your fruits.