Are they a big deal?

Because im thinking of going summoner with all my binus stats going to int. But then, i also want to play scholar when queueing in dungeons since healers queue very very fast.

I believe that that stats are permanent and smn and sch doesnt have different stats bec both came from arcanist.

Will I lose my effectivity as a healer if i placed all my stats on int? Or i can still be an effective healer despite the fact that im a sch with all bonus attributes poured into int?