All of the KNF we have recently encountered have been very gracious, in both victory and defeat. Very well-mannered in private, and very friendly. I believe some may be new, and others older players, but seriously well done all round. I'm not the only one that's noticed this, so I'm speaking for QCP as a whole.
Fun note: If these KNF were sportsmen, they'd be Roger Federer, who is always really nice for some reason.