It looks very nice! Thanks to share your work (I'm also user of OOo and TIki, and interested in their import/export functions).
Btw, have you checked these links?:
and the two video-tutorials at escire.com using tikidav with OOo:
- Editting Wiki pages (with wiki code) from OOo: http://www.escire.com/escire2/tiki-index.php?page_ref_id=107
- WYSIWYG editting in Tiki from OOo: http://www.escire.com/escire2/tiki-index.php?page_ref_id=110