Just a quick post. Since I was the guinea pig for PW, it works great on PW running at 5.3.3. Will update later with more information.
p.s.: A quick note for installing. When on Windows and using 7zip and WinSCP. You have to extract the azw2 first before drag and dropping into your documents folder. Otherwise dragging out of 7zip and you get a nasty error3. And it took me quite a while to fix that.