Let them get upset. It's an interesting RP, if it ever happens.
I think its a throwback from when there was a very heavy enforcement of some RP rules. This heavy enforcement has died down a lot, recently, in favour of completely IC, player-based RP enforcement. Obviously the imms get involved if something bad happens OOC, or something really bad happens IC, but largely, I think we're a bit more trusted to deal with things on our own.
In the old days, I remember being told we could not RP a faith we were not part of. Nowadays (as seen by Dalvyn's post) that has obviously changed. So, that means, go for it!
(Although the original point about faith delays due to inactive faith managers does still bear looking at, but in perhaps a not-so-specific way)
If you have knowledge, let others light their candles with it.
--Sir Winston Churchill
"This place is boring, I'm gonna go eat whatever I can find laying on the ground"
-- Hoildric
Cacie asks Larethiel 'Did that air just bow to you?