Besides lactose sugar?
you are assuming that lactose in a beer makes it a cream beer, or am i missing something?
...nah I won't go there.
Creaming a beer? That's a new one for me.
"Be excellent to each other." -Benjamin Franklin
lactose does not make it creamy. Just un-ferm sugars. If you dont want a beer gas set up you could always get a creamer faucet. If you keg of course.