To be more efficient in flooding DaveM with netfilter patches, I've now hacked up a set of 'wrapper scripts' around my git tree. They enable me to efficiently apply patches to my tree, generate sequential sets, and send them off (actually not using a mail user agent).
This means, that for now my patch submissions are (like those of 99.9% of the other kernel hackers) not PGP/GPG signed. If I find some time, I'll add that feature to my script.
Anyway, I've sent off the first set of 10 netfilter patches and it worked like a charm.