Sue was very nice and sent me a few sheets of the Derwent Watercolour paper to try. I glad I didn't buy any. It could be because I was using polychromos and they are a harder pencil, but I don't really like the paper for coloured pencils. Its hard to get layers to build up, and it took way too long to get to the above image compared to even using matte board.The colours look very washed out, and they don't bend that well.
I am going to try some softer pencils on it probably tomorrow, and watercolour which should work better since it is watercolour paper.