Wireshark 1.7 display filtering on Multiple capture interfaces

Now that we can capture on two or more interfaces concurrently with 1.7, is there a way to create a dislay filter only on one or the other within the capture file? Or in the case of, say 4 ethernet interfaces, filter on the first 2 and not the last 2. Application (in my case), you have the main corp network and a separate segment for a test lab and yet another for the accounting dept. I can think of some roundabout ways of doing it but I was looking for something like "!ip.int == eth0/1 && !ip.int == eth0/3". Wishful thinking maybe but I can definitely see this coming up in the near future.