Scholar sure as hell should get Haste natively and it sure as hell should stack with Accession.
Embrava gives us Accession Haste at level 5 for crying out loud. I'm going to enjoy shouting this down SE's throat for the next year or so with no results.
Well, the logic that we shouldn't do better with a subjob spell is fairly flawed anyway. Remember Lv.75? I don't remember Red Mage ever having Gravityga, or Blindga, Bindga, Bioga and so on. Wait why am I mentioning Enfeebles? One word: Phalanx.