Short answer: no.
Long answer: no, but... you could cheat. For instance, you could copy the "Italic" .ttf to "Bold Italic" and then use this method
on the 00-*.conf file.
The workflow would be something like:
- Initialize font
- check how Bold Italic style looks
- Edit 00-*.conf
- restart framework
- goto 2
... until the result looks good.