This answer refers to a Tao Buddhist. I've never heard of this term. Is a a definite religious movement or is it just a colloquial term that refers to someone who holds both view simultaneously? In either case, is there any conflict when subscribing to both philosophies at the same time?
I would think a Tao Buddhist is a Taoist an Buddhist. The Tao is the religious experience of the world, an the Buddhism is the philosophical experience of the world. The Tao developed its understanding of Yin an Yang this is sort like the Hindu/Buddhist concept of Karma.
You can find that Buddhism mingles with all type of religions. Buddhism is a very adaptable system that can help improve people in or out of religion.