OpenSUSE Install :: Ubuntu Sharing /home Partition?

I have two partitions where I can install (e.g. versions of openSUSE). I have a Swap and a /home partition to be shared by both. Thus e.g., while still running 10.3, I could install and test 11.2. Once I switched over to 11.2, I still can use 10.3 when need arises (not done for monthes now). I have the 10.3 partition mounted, thus I can stilll see what was in /etc/.... on the 10.3 system from the 11.2 system if need arises.

I gave the file systemss on those two partitiions different labels to better keep them apart. It is in the first place up to you to design how you want to partition your disk(s) to facilitate such a feature. Has someone done a thing like this (especially sharing /home partition) with openSUSE and Ubuntu? Is there a How-To anywhere? Until now I have the /home folder of Ubuntu not on a separate partition but under the system/root partition "/" of Ubuntu.