The starting points are not classes they are just points distributed to seem most similar to desired character player wanna play.
Isnt one of main healing spells in hydrosophist branch and also since when knights dont use two handed swords???
And on your companion view you are not obliged to take em plus from what Swen said you will pretty soon after prologue be able to hire henchmen and totally customize them, though I think that even now you can customize and also order them how to behave and develop them self in combat.
