Anyone use one of these tools? First I've heard of them, and would seem to make my inner control-freak happy.

    pg_reorg can re-organize tables without any locks, and can be a better
    alternative of CLUSTER and VACUUM FULL. This project is not active now,
    and fork project "pg_repack" takes over its role. See
    https://github.com/reorg/pg_repack for details.