I'm also interested in new browsers. I mainly use Firefox, and have been using it since its Navigator days (although for a long period I used a derived version for OSX, Camino), and I use Chromium and Safari when I have too. A new browser is welcome for multiple reasons. But the article is very light on details, such as: what features does/doesn't Orion's engine support? It's fast, but the author doesn't even mention if Orion uses Google Safe Browsing or an alternative (which could be why Safari briefly lingers).
As it turns out, Orion is webkit based. That would explain how there can be an iOS version in the works. That seriously reduces my interest. I've signed up, because you never know, but Orion is not an undertaking comparable to Chrome, Safari or Firefox, that will add a much needed breath of fresh air/diversity to the browser landscape.