The presentation I gave is here: pgloader-prefix.pdf, in French.
I also attended at the PostgreSQLFr booth the Tuseday afternoon and the morning of the Wenesday, but found there was a lot less people than 2 years ago (had to skip last year edition).
I've had the pleasure to meet Simon Riggs on the booth, we chatted a little, but he was so eager to get visitor's attention to focus on PostgreSQL that he had little time to share at the end...