Art, I have done just that in the past for a few projects, except I have 1 enable line that is dedicated to the enable port pin declaired with 2 resistors of 1 K ohm value connected to the enable line from the processor. Then each of the other resistor legs get connected to the respective display enable lines. Then I just used 2 remaining processor pins connected to the the display enable lines respectivly, these pins would be held low and set as outputs. Now to communicate to a display you just set the respective (enable) pin to an input state then send the lcd commands to that display. The other display will keep its former displayed material as it's (enable) line would be held low.

Dave Purola,
N8NTA