K-5 IIs vs K-5 II - can you tell the difference?

Anyone have a K5IIs and is willing to take, and show us, some real-world shots of people. I'd love to see how much of a problem moiré is in day-to-day portrait and wedding work. Also, the new, improved AF hasn't been mentioned much. Any reports on that? Thanks in anticipation.

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Gordon Saunders