If you don't mind wait for a while for KPV to support touch device ;p
I actually have been using the development version of KPV in my kindlePaperWhite for two days now. Now it only has the most basic features (which reminds me the first version of KPV). But, yeah, so far so good.
I guess the first demo release could be out in 2 months, but if HW managed to get some freetime during the holiday, we can work it faster.