If you're interested, I strongly urge you to pick up the baton. I can vouch for what Dave says in his post: he's demanding, but he really invests in the people with whom he works. As long as you're not a prima donna who cannot handle tough questions about your work, Dave has a lot to offer as a teacher and a boss. Actually, boss is a terrible word for the working relationship you can expect to have with Dave. He's an articulate collaborator with an insight into users' wants and needs that I find amazing.
Opportunity knocks. Answer the door.