We tried using CDN for static files (interface javascript and such) for a while, but we found that it didn't really give much benefit. The faster connect times got eaten up in the second SSL negotiation required for a different hostname. And it meant fun and games with content security policies or giving a third party SSL certificates that were inside our domain, so it was a wash. We decided the benefits didn't add value.

And yeah, our core dev team is in .AU, so we know all about the latency. It's really not a big deal once you sync up the first time - all the static artifacts are cached and the dynamic data is loaded in the background, often before you need it.