Outlook requirement for EV server for PST Migration?

I realize this may be a dumb question, but I'm going to ask it anyway.  Our EV 9.0.4R1 server is running on Windows Server 2003.  It currently has Outlook 2007 installed.  Our end users are now all on Office 2010.  We're finally getting around to starting a project to migrate everyone's PSTs into EV.  Do I need to install Outlook 2010 on my EV server?  If I don't need to, is it recommended I do so to minimize issues moving forward?

Any and all advice is greatly appreciated!