So the meetup went well. We had abut three hours, and just hung out at his place drinking beer. I immediately grabbed a pen and paper, and drew out a series of 3 single-axis graphs... one for apertures (with size-accurate circles and labels), one for shutter speeds, and one for ISO. I then explained what happens to the exposure as you go up and down each scale. Then, I explained the trade-offs with each of them -- DOF and other glass issues at each end of the aperture scale, then the 2 kinds of blur on the the shutter speed scale (camera shake, subject motion), and finally noise on ISO. That led to explaining what "stops" are, which led to the EV Comp knob. Then I demonstrated DOF and camera shake with the xf 35 lens, and then he walked around and shot things and asked questions.
He's better than I hoped. He once shot film, like me, and developed film in school, like me. So he's where I was about 3 years ago. I explained why I didn't get the kit zoom, why I now regret it, and why he absolutely should. Then I put all my wet gear back on and biked home in the cold rain. I had a really good time.