>Is there an obvious way to read that?
That reseracher seems to be well vindicated judginf from that fact that that reading is on listed on Wikipedia.
http://ja.wikipedia.org/wiki/%E3%82%B7%E3%83%A3%E3%82%A4%E3%83%8B%E3%83%B3%E3%82%B0%E5%A8%98%E3%80%82
>the woman is rather... well-endowed
If you want to pursue that line of though, Wikiepdia is again here to rescue.
http://en.wikipedia.org/wiki/Koku
May the Google force be with you (^^)