Is there a way to install unity or gnome3 along with lubuntu?

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http://askubuntu.com – I'm using lubuntu for a while now, but found a couple of details that I wanted to view with unity (that's another story). Ok, the thing is: I'm tryed on a VM with lubuntu to install unity (sudo apt-get install unity) When the instalation is over. I selected in the lubuntu login the unity / unity2d but does not work... Right now I'm isntalling the ubuntu-desktop, Im presuming that will work, but also it will change my login for example. Is there a way to do a "clean" instalation of unity but not to do mayor changes on my lubuntu? I wolud preffer gnome3 instead of unity... (HowTos)