Yes just keep a shortcut for IE in your start menu, you will have to paste the link in. One thing, NOW you can set your IE security and privacy settings to the highest (disable) or near highest (prompt) because you won't be using it but for special purposes, you won't mind authorizing through a prompt, script and activex behavior when you need them.
People should always set IE security and privacy settings higher than they would for normal browsing when they install an alternate browser. This way apps that use the embedded form of IE like Windows Help and Support and Windows Explorer itself will not be vulnerable or less vulnerable .
That last line should read.
This way apps that use the embedded form of IE like Windows Help and Support and Windows Explorer itself will not be vulnerable or less vulnerable to bad script and activex behavior.
Any system will be vulnerable if you download (invite) crap onto your system, this is where the brain, application control fireall, anti-virus, spyware/adware removers and anti-trojans come into play