It works out if you plan to play out Chattel Religionism the way they want you to play it, though. It still allows you to keep wearing the Chattel Nun Habit outfit for your slaves, after all. You could have your disobedient slaves be naked (as they usually would be, unless you slap on stuff like shibari ropes and similar 'clothing' items) and be praised by The People for doing so. The way I usually have it, and shown via custom prompting I use for Illustrious model AI art, is:
- Disobedient: Naked
- Obedient: Nun Habit (erotic, of course, by using breast_curtain and pelvic_curtain tags)
- Full Obedience + Trust: Nun Habit, with an ornate gold belt
This goes against the actual in-game description of how the outfit is, but I don't really care. My idea of it is that while they're disobedient, they're made to bask in Holy Nudism. When they're finally obedient, they're given the Chattel Nun Habit to show that they've been accepted as a standard 'priestess'. When they're fully obedient and trustworthy, they're given an ornate gold belt to show that they are now a fully fledged 'Sister'. If I happen to run Edo Revivalism at the same time, I usually pre-plan this by replacing them with Mikos instead (except I have it shown in four stages instead - Disobedient -> Obedient -> Devoted -> Full Obedience/Trust), and savescum if necessary to have public service seen as a holy thing for an incredible boost to Reputation on top of Edo Revivalism's boost for having sufficient public service slaves. It does mean that you make a lot less Brothel money as the lower class will fuck your public service slaves instead and those slaves get worn out significantly faster though.
That said, even if you don't care about dressing your slaves according to how Chattel Religionism wants you to, the bonuses it provides is incredible for pretty much every playthrough except those fully devoted to Degradationism. Fully embraced and with the Council active with the right choices, it removes the weekly Devotion cap ontop of boosting Devotion and Trust gains like crazy. You can have even the most disobedient slaves that hate your guts liking you within a few weeks without you needing to give Personal Attention, and many slaves will easily hit max Devotion/Trust for the same reason. Society will love you for making them Emotionally Bonded to you as well, and so will the slave, for them showing 'devotion to the Prophet'. It only doesn't work well with Degradationism because it requires you to keep slaves fearful, which the increased Trust gain will heavily offset, requiring you to be even more nasty to them all to keep in line. Degradationism is something I'm always opposed to because I can never bring myself to being nasty to my slaves, so that aspect isn't an issue for me at least.