I paddled a Remix (the size that fit me) on the Upper Yough last time I was visiting and had a great run in it- I found it rather sporty. It seemed only a mild departure from the "short bulbous" designs with excessive rocker- to me that's one of the keys.
We all know what rocker does for us, but sometimes I think contemporary creekboats have a bit too much. Don't get me wrong it makes a lot of tight, turbulent water easier to negotiate, but it does so at the expense of hull speed and tracking. You could take a small amount of rocker away and still have plenty. It just takes compensatory skill then to overcome the lack of it.
But yeah, I think the Remix seemed like a fun boat. It would be interesting to lay it side by side some other boats though for comparison.