I have installed openSUSE 11.4 today and I am trying to install Pencil on it. I downloaded the ArchLinux tarball from the site, and after extracting it, the pencil.sh file didn't install, giving a bash error (permission denied). I also tried searching for it on YaST, but didn't find it there.
Why don't you use a OpenSUSE rpm? The OpenSUSE build service has rpms here. If the packages aren't up to date, it will probably not be difficult to modify the packaging and rebuild a binary rpm.