This is something I’m interested in, but font files can’t be uploaded to WordPress by default due to security reasons. Plugins like those actually bypass the default block put there by WordPress.
I would need to know there is no security threat before putting something into the theme. Once I’m able to confirm that it’s not a problem, I’ll definitely add it.
For now, it’s actually a really quick process as long as you’re able to upload files to your server.