I think most T:s get attached in some way, there are only different ways of showing or not showing it to the client. The client directs his/her attachment to one single person, the T, whilst the T directs an attachment to several clients most likely and that´s why the attachment per se isn´t fully comparable.

I know a T can get attached to clients, you get a lot of "evidence" about it when you see a T for some time. My former T didn´t tell me straight out but as an example I heard she was sad when terminating me and we spoke on the phone. Even if she made several errors when terminating me, she in her way tried to cheer me up and to encourage me to find a new T. I know these actions came out of her attachment to me even if the termination wasn´t done in a proper way.

So yes, I do belive in attachment from a T to a client. When there´s a well-established alliance I believe you as a client will feel it.