Wolfram wants peace#SPAish is far from "having it all" but mostly your MPA (if it is one in the first place, maybe think of switching to it) should be blazingly fast anyways. And SPAish just helps with a couple of lines of #JavaScript to progressively enhance some #UX niceties.
The best thing, it can also be used as a role model on how to extend your page with other tiny helpers you might need.