After using it this is what I think.
I thought I was installing firefox. The installation is the same.
I did not car for the bloated IE look.
Once I switched to fullscreen, fenrir felt like IE 10 albeit a little less polished.
They need to apply the fullscreen metaphor to their windowed mode.
Can someone please test raven for mac.
I have had my eye on it for sometime now. It looks like Opera