At the moment adding the PPA on Ubuntu 11.10 results in:
W: Failed to fetch http://ppa.launchpad.net/slicer/ppa/ubuntu/dists/oneiric/main/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/slicer/ppa/ubuntu/dists/oneiric/main/binary-i386/Packages 404 Not Found
when running apt-get update. I am not that experienced with the packaging process, but afaik it should be possible to just package the same source for Oneiric!
Anyway, this would be great; for now I'll just add the repository manually via sources.list!