I stumbled across this site the other day, and have loved reading your reports. Made me really excited about the nice weather coming back so I can get out on the bike for longer trips.
Thought you might be interested in a write-up I did of a trip last year. Not sure if it's strictly bikepacking, see what you reckon.
http://www.stopreadingthis.com/2008/biarritz-to-barcelona-by-bike-day-one/