I bought the KP mostly for a trip last summer - my plan was to use it with the DA300 and DA1.4 TC. It was perfect for that - I was much happier than if I had bought a DFA 150-450 and a second K1.
I've continued to use the combination, most recently at an urban campground, to capture my next site neighbor, Frankie.
The lighting was very harsh - very early afternoon in the desert. As you can see from the second one, Frankie is a working girl, her handler has a contract with a nearby landfill to help control wild birds there. I spent a very pleasant afternoon talking to him.