Yes it is, as long as you are distinguishing the different services by port #. For example:
Virtual 10.1.1.1:80
bound to
Real 10.1.1.2:0
Real 10.1.1.3:0
you can also have in the same config:
Virtual 10.1.1.50:443
bound to
Real 10.1.1.2:0
Real 10.1.1.3:0
I hope this helps! -JB