Just noticed there was a 0.5 release
of Vade Mecum, the Plucker-compatible viewer for PPC.
I don't have a PPC so I can't try it out. I did look at the change log in the CAB file and for v0.5 it says "added support for continued text records". This means you can now view JPluck-generated documents, which rely on the viewer supporting this feature. It doesn't seem to support multi-images, though, but you can disable these in JPluck's Preferences. This way JPluck generates images that can still be viewed by readers that don't support multi-images.
Just wanted to let you know.