I'd encourage you to talk to him as MUCH as you can! Glean every ounce of info he has. As a GM II, he probably has a LOT of great tips on the exam itself as he is probably, or was involved in grading at some point. Make sure you listen well when you taste beers too. Its like having your own Beer tasting sensi!
I have been! I bumped into him semi-randomly; a friend invited me to a small homebrew contest (almost skipped it ) but I figured it'd be fun and it was at my favorite watering-hole. Showed up, ranked beers as asked, and then hung around and got a club invite and the info I needed to enroll in his class. I'll be stewarding later this month and doing my first judging early August.
If anyone in Sacto wants to do the class too that might be nice; having someone to study/quiz with wouldn't hurt.