All I know is whm and sch definitely aren't the same thing. I love whm. I'm on it 99% of the time. That 1% when I'm not on whm, I don't enjoy as much. I leveled sch thinking I'd love it cause its also a healer. Nope. I hate playing sch. I feel uncomfortable on it.

Also, it's usually the full support jobs that people exclude anyway.