Having an external web browser and internal one isn't so bad an idea. Our ridiculous CMS supports only FF2 and IE6, our bug tracker doesn't work in Webkit. So I have three browsers: one for work apps, one for development, one for surfing / docs. Keep crashes from ruining your day too.

No? Then you've clearly never written an application for the Web. There's been a ten year argument about what "JavaScript" means, and they still haven't figured it out.