I didn't think of it too much previously, but I guess it's worth considering. If you fear certain monsters afflicting a status effect on you, and you don't have a Ribbon handy, this is a good substitute. Given how status priorities work, you have the opportunity of getting the closest thing to a Ribbon in having Piggy status. You lose a number of commands, particularly the spell commands, but you get free protection against the following:
Mute
Darkness/Blind
Curse
Paralysis
Sleep
Charm
Berserk (yes, that means control over the Pinkpuffs/Flan Princesses battle)
Unfortunately Poison/Venom and Gradual Petrification is not part of it... but otherwise that's pretty damn good. However, this won't protect you against Bad Breath.
Your offense/defense is not affected, so you can still become relatively useful... if you are a fighter.

This method is ideal for a fighter.. even better with the guy wielding the Avenger. Piggy status is also handy on the enemy via a Change Rod, but I forgot the "benefits" of the Piggy spell as it is underrated... it's really useless for any other purpose than what I've suggested.