I made it, but barely. I felt like a complete idiot, since I proposed the place and time, but I got sucked into a project (making a grow lamp for my sprouting boxes)(yes, for actual tomatoes, not for "tomatoes") and forgot about it until about 10 after 5.
Rubin's a stand-up guy, and I really enjoyed meeting with him. I walked away with a fair amount of notes that I'll share in some way soon- I haven't decided whether I want to post on it or share it in person at the next meeting.
The biggest thing he impressed on me was this: get a space as soon as possible.