Lamplighter, it's good to hear you didn't give up on finding the right T.
Despite what you were hoping to find in a T (warmth, caring, kindness, etc.), and despite this guy seeming to be a bit cold and detached, do you have the feeling that he is compenent and knows his job? If yes, go for it.
Did you ever wonder that what you may really need is to hate your therapist? Is it possible that it was the reason that you could not stick to any of the Ts you were seeing before? I don't know how it works, but my T told me that some people hate their therapists, but still feel thaat need to keep coming. That was when I asked him if everyone loves their therapists. So about the attachment thing... there is no a ready scenario that everyone goes through. And scary thing as it is... it doesn't have to go wrong.

I am with my T approx 1,5 year and it's going great. Well, of course, I have no guarantee that it will always be like this, that nothing bad in my therapy will ever happen, same as I have no guarantee that something in his life will not happen that will have to make him stop seeing me (and others). But yes, my attachment is healing. It's enormously healing.
And it is absolutely real.

Perhaps it starts off as growing attachment, becomes transference, when feelings buried in the uncounscious return, but these feelings are mine and real, there are part of me and they become part of this new relationship that I have with him. They grow and change and as he says, they are all good and welcome here.

Same as Forg`s experience, me becoming attached/in love with my T suddenly kick-started my life. I'm not the same person I was (in a way). I am more ME.