I using it right now!
It's supposedly more secure than IE so i'll take their word for it. Also I find it generally faster (at loading pages) then IE. It has some good features aswell, such as opening up multiple pages within the same window using tabs (which saves on memory also). Integrated search bar, ad blocking and a clean n tidy interface are all very nice too.
And there's no problem with making the switch as there's an import option for all your information stored in IE'.
I like it anyways