I'm still personally going to disagree with you. I've had a Fairy take one too many hits from Assassinate to have much of any sort of faith in evasion. Obviously I just kept getting hit with some pretty shitty RNG, but it happened enough that the extra 3 MAG a fairy offered just wasn't worth it, particularly since early game combat in this game can be fairly brutal before you've accumulated enough gear, stats, and combat oriented slaves.