I like the article. And I applaud any physicist trying to come to grips with our conceptions of reality AND reading up on philosophy. That being said, he's neither the first nor will he be the last, nor is "perpectivism" in epistomology a new thing. I like, however, how he is throwing in several streams (I saw James, Nietzsche, Kuhn, and even Rorty and Wittgenstein II) of thought, centered on Kant's ideas of the noumenon and its inaccessibility. I don't think I agree with him, though ;)
If I had to label him, I'd say he is mostly an anti-realist.
Mario Bunge was another physicist who deeply engaged with philosophy (he taught philosophy at McGill University). Interestingly, the conclusions he arrived at were quite the opposite.