On the Paladin:
To actually take advantage of Holy Work, you still have to avoid sinning for long enough to save up for the boons (which you can admittedly do quicker than most classes), because you still lose piety for sins. Once you have the boons you want, you can sin as much as you like and just stay at 0 piety. Glowing Guardian and Dracul are definitely stroppy and useful enough that this represents a big advantage, I think (especially if all you want from GG is Humility and Absolution). With other gods though you earn more piety than you burn on average without really trying, unless you have an extremely deprecated play style (e.g. a Warlord choosing to worship Tikki Tooki), and the Paladin is not an extreme character by nature. So the advantage isn't massive for most gods - maybe makes pact use a bit safer I suppose, but then cruising at 0 piety means you're probably wasting a lot of the benefit of the pact anyway.
JJ still doles out minor punishments and never deducts piety anyway, so no big advantage for the Paladin there.