Successfully ported DjView to RIM Playbook today. DjView 4.8 is based on Qt 4 so it only took me a few hours to make it happen (mostly for the configure of djview and djvulibre for QNX build).
Of course the QNX plugin for Qt took pains but it was done a few months ago.
Now I can read some book on my commute. Joy!
PS: Qt 4.8 with Lighthouse is just great!
Have some screenshots: