Meaning that your major should be what you expect to stay in form with at hero most often.
I went defense major, offense minor, was able to solo most things by starting with offense, shifting to defense to regenerate, then back to offense. Great for exploration.
Had trouble with mana in long, drawn-out pk situations though in which i needed to use my offensive form. The defense wasn't that useful in pk, except when it's time to run.
I had diamondback rattlesnake/ golden jaguar, fyi.