There seems to be a consensus that your T was a little bit too forward, for a first session. I agree that he should have at least asked you first. On the other hand, he simply be a very outgoing, down-to-Earth huggy kind of person and that's his therapy style, which he told you. What's important is that you discuss it with him so you won't have to squirm at the end of every session if you don't want a hug. If he's any good, he'll discuss it and not try to hug you again unless you want it.

I've had 4 Ts who didn't hug or touch me. My former T hugged me at my final session, though. My current T told me in the beginning that she allows hugs but I never wanted to (I'm not a huggy type person at all) until some time later. What I did like is when she offered to hold my hand when we were talking about a child part who needed that. I like that better than hugging. We hug now when I tell her I want to, but not every session, and she would never do it unless I said okay. I want to add that I am becoming a more huggy person in RL and I like it!