GnuPG encryption with key file

[nb.linux]

Peter Lebbing:
> So the "key file" method /is/ better than echo passphrase. It's still a risky
> thing to use, in my opinion, though. And the hack presented doesn't allow for
> the common scenario: a key file *as well as* a password. It might be possible to
> hack that in as well.
hmm.. what about just using cryptsetup/LUKS with passphrase and key file
(on a real file, not a block device)?
of course that's then without GnuPG..

-- nb.linux