It's always been an interesting topic, and I have no idea how anyone can think that they have seen Dave perform a 9-packet Leno - when clearly the Leno cut is just 7 or 8 packets. Here are a few pictures I've collected, showing him performing the Leno cut and each one of them being just 8 packets:
Despite saying that however, I have heard talk that Dave does have a 9-packet Leno; it's just something very few of us have seen (at least not I).
Hope this helps and clears up any queries about this.
Jordan