I'm a classicist editing Greek texts and I also recently found OUP willing to let me set my own book with XeTeX and submit PDF to them. It wasn't hard to convince them at all, actually, since it looks good and saves them time and production expense. The production process went really smoothly, all in all.
For articles and collaborative work, on the other hand, I use XeTeX until the final phase and then generate a plain text version with pdftotext, and use OpenOffice to manually reformat everything. It's annoying, but I can usually fix up a doc version of an article or chapter in an hour or two at most. It's much easier now with utf Greek encoding. Jud Herrman -------------------------------------------------- Subscriptions, Archive, and List information, etc.: http://tug.org/mailman/listinfo/xetex