We use font awesome but it's provided by an OSGI library so that's probably not the best example.

I think Brad's made some posts on his blog - xcellerant.net about font awesome and getting things to work a little better with xpages.

Might be worth checking out.

Actually no, you only mentioned finding "some guidelines on stackoverflow".  So I pointed you to Brad's site who has this article that I would think would work.

http://xcellerant.net/2014/04/07/implementing-font-awesome-4-0-3-in-xpages/

The "runtime optimized resources" option is not discussed in that blog post.