Indeed. I downloaded it to try it out, and it is very interesting, but there's no way I'm going to even think about really using it until I have the option to set it as the default browser.
Why do you care if it's the default browser or not? Most of my browser interactions are by intent (that's me pushing the Chrome app icon to get on the internet) the other times when it defaults to Safari, I still get a decent experience - nothing breaks.