Well I don't know about a Great Slow Travel Gathering II but a bunch of us who were at Slow Bowl talked about doing some sort of large gathering in St. Louis in October 2009 - so we'll see; you never know.
Jen, we may be going out there for a "scouting" mission (code for visiting the local wineries ), this summer. I'll post in the GTG forum when - maybe we could do a mini-gtg.