+1 on that VT...................For me Opera and Chrome are only about 2 seconds faster when loading then Firefox. But once Firefox is up the page loading is equal. Also after using Speedyfox Firefox loads even faster.
Things will be different when Firefox will come with it's new skin and engine. For now some users will admit that they care more about speed and looks and usability then security. Security should be taken care of your security program not a browser.
A fool with an antivirus tool is still a fool. If you can't convince them, confuse them. The last thing I want to do is insult you. But it IS on the list.