It's funny, I'm reading a book called "Wittgenstein's Poker" right now. It's an account of the one-time, highly emotionally charged confrontation between the charismatic, subjectivist Wittgenstein and the low-key, objectivist Popper at Oxford University's philosophy club's weekly meeting. It was October 25th, 1946, and the two had a face-off. Wittgenstein may have brandished a poker at Popper, depending on whose account you hear. It's a fascinating book.
I'm only a quarter of the way through it, but from what I'm understanding so far, Popper and Soros are NOT compatible. I suspect Soros isn't terribly intellectual.
WHOOPS! Not Oxford, King's College at Cambridge. Sorry, all!