Stephane is a great guy.
I never met him but we had several discussions in the LXC mailing list before the LXD project became a thing.
His knowledge helped me to enter to the linux container world and made a career of it.
I've met Stéphane, he's great in person as well. I briefly considered applying to Canonical despite the stories of poor conditions, just to get the chance to work with him. I hope he does well.