I've played about 6 hours. I think I may start again. I've made two companions in to the same class which is probably a mistake. I don't have a healer at all!
Being able to customise your companions to this extent is another very welcome addition.
Also, a quick story on how reactive and free this game is - whilst waking around, a guy came up to me and said he was here to kill me. That started a fight. It was just me as I didn't have my party yet. He nearly killed me, so I used the skill 'play dead'. My character lay down on the floor playing dead, and the guy just ran off thinking he'd kill me!
That is awesome.