They would likely meet a bunch of closed borders and "no preaching without formal permission" restrictions while being met with cold silence. In other words, encouraged to pack their stuff and go back from whence they came.
That's what I'd expect of it, at least.
I don't know. Most realms in the Southwest are pretty open to religion, at least Terran is. We even have Atroists already in Terran, a Duke even.
I guess, the other realms might not be so nice... lol
