madwoollything wrote:Will installing the meta package create desktop that is the same as a fresh XFCE install?
No, as you will still have GNOME applications that wouldn't be in a fresh XFCE install. But if you want to test the upgrade path, this is the way (without reinstall). You may also look at http://packages.debian.org/wheezy/task-gnome-desktop
to see what packages you might want to remove.
Best to also compare with Live DVD or USB stick, dual-boot or as shared a virtual machine.