Hey, sorry for the late reply!
I've made the A-format files available if you're still interested:
http://www.einarstabenfeldt.com/soun...-upon-a-stream
And here's more about the capsule / channel sequence:
http://www.core-sound.com/OctoMic/2.php
I finally got the chance to listen with a headtracker, and it felt like something weird was happening to the high mid frequencies, like a mouthy, "sucking in", sound, almost metallic sounding, if that makes any sense, but my mac kept crashing while I was using the headtracker, so I've put that aside for now and just use a scene rotator instead. Didn't notice any low freq noise though.
About the different encoding options in the VVOctoEncode vst, from Core Sound's site:
"VVOctoEncode allows you to select among three options during encoding.
The first option has the least processing noise and provides excellent spatial location cues.
The second option adds a slight amount of processing noise but has slightly stronger spatial location cues.
The third option adds a bit more processing noise but has even slightly stronger spatial location cues."
I used the third one for rendering these. I used a foam wind screen while recording, but haven't used any noise reduction, EQ or anything else in post.