Speaking of tanking without an aegis/ochain/epeolatry, I'm curious about other jobs tanking as well. Namely, while gearing up MNK I can't help but notice that literally all of MNK's JP gifts (outside of a whopping -10 to delay and the obligatory att/acc boosts) involve guard and counter. Between those, Perfect Counter/Counterstance, and relatively easy access to -pdt% gear, it would seem to make a rather decent tank (and it did back in the abyssea days).
Main problem though is magic damage taken. Wonder if that could be worked around, or does everything just toss out too much AoE spells nowadays?