Is there a decent way of using different PDF fonts for different parts of a Forrest site?

Hello,

I have a site which has different languages in the same site.  This
works OK except when it comes to PDF generation.  There seems to be no
font choice that covers all languages; I need Dejavu for latin
languages, and IPA for Japanese.  The problem is that I can't figure
out how to configure Forrest to use one set of fonts for part of the
site and a different set for another, for PDF generation.  Is this
even possible?

Thanks,
Karl