I've just glanced at my Paladin having raised them to level 2 and taken Deep Faith. I was taken aback to see that their fortitude defence was 24, the lowest of everyone, and the other defences aren't exactly brilliant. Are the faith +7 / +15 / +15 / +15 bonuses not shown on the character sheet? Do I have to improve my reputation to get any? Currently the party has benevolent 2, which is in accord with the paladin (Kind Wayfarer)

 

Just looking at the basic data the Paladin looks like they ought to be about a match for the fighter in fortitude, with the lower strength and con mostly compensated for by the faith. Instead they're 23 points behind. *confused*

To answer my own question in case other people come searching, it seems faith and conviction only activates during combat.