I'm not sure which attachment style would fit me, I also don't think it's a constant thing for me. Most often I'd say I'm somewhere around anxious-preoccupied.

With my T it's slightly different though.
I'm very attached to my T, but at the same time, I feel I can function without him. If he takes time off (and tells me beforehand) or if he had some expected thing happen that made him not be able to see me anymore, that is/would be fine. I'm actually not bothered by vacations at all (which kind of surprises me). With most other people I've known where there was a similar level of intimacy, I'd be stressed by these times.
I am, however, very scared of 'surprises', especially somebody just leaving without prior warning, without me being aware it might happen. That is something I worry about a lot, get afraid of and so on. Though by now the only thing I think I couldn't handle would be T suddenly not wanting to work with me anymore, which I really can't see happening.
I'd probably define the attachment I have with my T as secure with lots of trauma involving abandonment mixed in that makes it hard to know how I really feel about the relationship sometimes.