It depends on which strain of Buddhism you are looking at. Tantric practices found in the 3rd turning of the Wheel of Dharma, such as in Tibetan Buddhism, very much teaches that nonduality is not "other" to form. One finds Emptiness through and within form, not by escaping it. Nirguna pointed this out that to say that only Nirvana is real, is a form of subtle duality, which divides what is real and what is not.
"Form is emptiness, and emptiness is form. Form is not other than emptiness, emptiness is not other than form."
Another similar saying can be found in Sri Ramana Maharshi who said,
The world is illusory;
Brahman alone is real;
Brahman is the world
And if you wish to add some Christian mystical expression of that in here referring to Jesus, "In him dwells the fullness of the godhead bodily". It's very tantric in this way, that all humans have the Divine Reality within their being, and can experience this "incarnation" within themselves. Experientially, this is true.