Our audio group routinely does simple double blind tests and I can tell you it is not a relaxing experience. I am convinced that people listen very differently under testing conditions than they do normally.
But the real issue is why should you even care? After decades of 2 channel listening, I no longer doubt my senses. To me this is ridiculous argument that will yield nothing. A discussion which has been going on for decades, I just dont remember there ever existing a worse ambassador for the measurement side than Amir.