I too, would be disappointed if it was a summon vs. tame. I like the idea of individual style and personality being reflected in your pet.
Family is Forever
It allowed druids to pick and choose what pet they wanted.
In WoW, , even when you "tame" your pet, you still summon it. And revive it.
We don't know how pets are going to work. Maybe you can still rename your pet. Who knows.