Might be something to be said for it being an obvious overwrite in some cases; /dev/urandom overwrite might be indistinguishable from an encrypted drive (for wh

Might be something to be said for it being an obvious overwrite in some cases; /dev/urandom overwrite might be indistinguishable from an encrypted drive (for which you cannot provide any means to decrypt), which might be a problem in some jurisdictions, or if subpoenaed after the overwrite, etc. That said I've typically followed any overwrites, random or zero-based, with use of ATA secure erase commands, which might be equally bad.