Can the same partition be used for both plain text swap and encrypted swap?

In Natty swap does not work. It has been corrupted and even gparted does not recognize its type. Maybe it is due Oneiric daily that I installed in the same computer and it uses the same partition as encrypted swap. (I have encrypted /home folder in both distributions.) Can Oneiric use this as encrypted swap, if I repartition the partition as linux-swap and use it unencrypted in Natty?