[robinsonb5]

Sure, I can do that, but there's some value in being able to check quickly and easily that, for example, the xz utils binaries shipped by a major distro actually match the published source.

Also useful for checking that a binary containing GPLed code does actually correspond to its published source.

[skydhash]

The capability may be nice to have, but what about its usefulness. Would that have been of use in any real world situation?