Is evangelicalism inherently dualistic?

It is clear that Christianity has over the years and centuries moved a long way towards holism. 

In terms of the state of evangelical belief in 2010, ideas like “marketplace ministry” and “engaging other faiths” bring together old opposites, such as the idea that on e had to remove oneself from the secular in order to embrace ones calling, and it has diminished the us and them attitudes prevalent in colonialism.

The problem with our post-enlightenment understanding is that it is largely built on a Greek model of thought, more than its original Hebraic one. The Greeks, and specifically Plato, created a dualism between an Ideal and a Real world. This dualism was Christianised by the likes of St Augustine, and still forms the basis for much of our thinking today.

For example,

In Worship vs. Evangelism, we appear to view conversion and devotion as two separate processes.

In Christian vs. Secular art or media, we discourage creatives from following their vocations in the wider world.

In Biblical vs. Non-biblical, we adhere to a hard delineator of truth at odds with the unconditional grace and revelation of God revealed in Christ.

In Science vs. Faith, we create a false dichotomy where both science and religion are viewed with mutual suspicion.

In Flesh vs. Spirit, we divide ourselves and fail to appreciate the core mission of Christ – incarnation.

In Heaven vs. Earth we ascribe goodness to a hereafter and evil to the present, the implications of this pernicious meme are manifest all around us today in environmental collapse.

And in Saved vs. Unsaved, we become the aribitors and judges of something it is surely beyond our ability to truly determine.

My question is this – if evangelicalism overcame these dualisms, would it still have an identity, or is dualism at its heart?