I'm a Maestro and Eva's Tank, the reason why i went this route so i don't have to worry so much about switching so much gear. I use heavy armor which both classes r needed for, i probably should change a different weapon with tank. But i can surive just fine with the setup i have atm. I was a Spoiler but since the spoil is all different, didnt think it was worth it, plus i would need different gear setup. But remember ur main has to be mastero, u cant do a dual class as that.