Thanks for adding the data since it really makes my work easier here :) Just two improvements that would be useful - no-herd should probably be hidden by default; - if there's a herd specified and the same email is reported as maintainers, I guess only one should be shown (check attached build log). Thanks!
Created attachment 246560 [details] ipvsadm build log
This is in git now: http://git.overlays.gentoo.org/gitweb/?p=proj/portage.git;a=commit;h=c0f7f00ddcfba8e671e9298dd625ee682c661a3d
This is fixed in 2.1.9.3 and 2.2_rc79.