No, I don't like it. I don't even like perfectly binary when it comes to black tie. That's why I like cream silk in that application more than white linen. Going all-out binary always strikes me as conspicuously contrived.
But yet, I understand most authorities say a white square is always correct with a white shirt.
It is actually. She liked the fabric in the closet and bought me a tie that she thought would look good with it. Alas, I had to spend money, but she shelled out a few for a drakes cashmere herself. What a lady!