I actually see the same T for individual and marriage counseling and he does an excellent job of keeping them separate. But my T has very good boundaries in general and is extremely consistent in his demeanor, so I would say he's quite professional in style even though he's quite caring. My thought is that if your T and the marital T have good boundaries, that's an encouraging sign of professionalism, and there should not be any issues. Also, unless you gave your T permission in writing she probably cannot share anything she knows about you with the marital T, so the marital T will only know what you bring up in session with your husband.