Unionfs in the working copy from different repos. ↩

Could be done with laysvn (layered subversion), from Erich Schubert. ↩

Allow checking out single files (needed for dot-files). ↩

Could be done with laysvn (layered subversion), from Erich Schubert. ↩

To split pub from priv data, and annon and authed checkouts. ↩

Each wc has the pristine copy against which you can diff. For total offline support you would need somehting like svk. ↩