There is, but you have to dig for it a little. Ben Dunn's original idea for it was very similar to his NHS stuff, where it was a completely silly concept given a very thin veneer of seriousness to ground it in reality. As long as that's what you like (and I'm not gonna lie, I love Dunn's stuff), you'll be satisfied.

Once he opened the series up to other writers with subsequent volumes in the on-going Areala story, and especially the side-series like Warrior Nun: Black & White and Shotgun Mary, there were a slew of authors both new and established who took shots at leaving their own marks on things. Barry Lyga succeeded, IMO, but his storytelling technique was the complete inverse of the way Dunn had set things up with the first two books/story arcs, and I think people didn't know what to make of it, so they just left it on the shelves.

WNA's got very few instances of nudity, and during the Rituals storyline there's an in-story adjustment to the Warrior Nun outfits as the Vatican feels the original habits expose too much skin, which I think is hilarious. I'm not sure if that was Dunn poking fun at all the other "bad girl" books, or if he was catering to an audience who complained about the occasional flash of thigh, but either way it was amusing. :)

Vol. 1 is your basic 'turn off your brain and just enjoy the pretty pictures' story. "Rituals", the follow-up, tackles some slightly more mature subject matter involving the rise of a Fourth Reich in the present day, and the atomic bombing of Japan at the end of World War II, but it's still got that Ben Dunn knowing wink of "Don't take this too seriously...it's still comics, after all."

Lyga took the reigns for the next six issues, which is Vol. 2, and it's far and away my favorite arc, with some serious 'shades of gray' and 'this isn't all fun and games' plots, along with the introduction of my personal favorite villain, "The Holy Man".

And if nothing else, the sixth and final issue of that volume, "Nor A Liar Run, Aware", is worth reading for the script alone. :)