I have noticed that the paladin defensive stance does not require 6 class levels (wai?).
This means that Arti 16/Pally 4 is eligible for +6 str, 20% hp, some PRR and a few other goodies. I know the ranger version gets more feats, but for a player with less gear it seems like the combo of saves/str/hp might make this an attractive alternative.
EDIT: Ooops, should be pally 4