This isn't something to count on yet when it comes to ranking well. That article says "don't expect to hide something behind JS".

The good news is that individual post pages using the OP's blog engine have content in the HTML and appear to rank just fine. The value of a well-ranking homepage on a personal blog is probably overrated as individual posts tend to attract links instead.

Can't be more wrong about this. Anyone who actually made a js only site and cares about SEO knows that googlebot only executes client javascript in very specific cases and will not get your content properly indexed.

You need a fallback. Why do you think the meteor guys made a big production out of their "SEO" release.