@dzoulias:
1/ Theoretically, anything the K5 family can do has a chance to work on the PW2. Check the stickies/index/wiki.
2/ Yup. Technically fairly useless, but there's an uninstaller in the package.
3/ Not easily, but yes, cf. the rescue pack thread.
4/ Not yet, but ixtab has been working on it, and should have something ready (at least for 5.4.0) when he gets back
.