Hi Geoff,
You certainly started something back last September with your 'New DSLR - Pentax K5' thread. Nearly fourteen thousand views so far and 250 replies.
Despite the number of replies there seem to have only been four or five K5 owners actually contributing and unfortunately we seem to have lost HinFrance and Sue Allen, who both regularly submitted very informative posts.
As for user reviews, you may recall that HinFrance wrote a full user review back in January but was frustrated to be told
after submission that a 250 word limit was imposed by PhotoRadar, so his review was not accepted

.
Here is a link to that thread.
I have sometimes considered posting a review but never seem to get around to it. All I can say is that after nearly six months use I am absolutely delighted with the K5 and would not swap it for anything. It is a joy to use and the images it produces are superb. I find the menu system totally intuitive and all camera settings easy to access and change on-the-fly. Really, there is nothing I can fault and at the new lower price recently announced by UK dealers it is unbeatable.
Regards
Bump