I refused to main heal in EXP parties as SMN and it was my first job to 75. Took me three years, but I had damn fun doing it. The perp cost was never too bad. You got used to it and as a result battles flowed pretty well once you incorporated a strategy with them. The whole thing about Blood Pacts being on the same timer before they split them was the worst thing. After that, SMN was peachy.