I might be interested... I live down in the south bay and get a little busy (/inertia'd) to head to the city, but I've been meaning to actually go to one of these for awhile (instead of thinking of going, and then realizing "oh, crap, that was today").
Are you all members of the SF Hairpinners group on facebook? They tend to plan a bunch of things there, but I don't think anything recent.