JYes while everyone wants to have fun, party up and of course gain XP if you have chosen to play a cleric, paladin or especially a divine champion you need to be aware of your parties deity relations.
It is about how you RP this. I say again, yes everyone should be here to have fun but let's not forget that choosing to play a cleric, paladin or divine champion brings with it certain responsibilities that shouldn't be ignored totally for the OOC reason of wishing to gain XP.