The K-5 can now be sent off to the shop for the extra-mirrorflip issue that many have experienced. Mine generally makes the extra mirror flip with a filled battery only while others' cameras were flipping the mirror at every button press or dial turn!
I still really want the K-s1 to succeed, and I like its compact and angular good looks quite a bit. In a couple of years my finances should be more predictable, and then I shall look around at the market - perhaps that's when the K-s1 will be mine...