The second speaker was Marco Pivetta, better known on the interwebs as Ocramius. He is a member of the Doctrine core team. His talk was about best practices when using Doctrine. His slides can be found on GitHub. Here's the video of the talk:
Spatie, of which I'm a partner, sponsored the meetup. Before Marco's talk I got the opportunity to talk a bit myself about why my company is sponsoring the local user group. My short talk can be viewed on YouTube.
The organisers announced that the next meetup will be held at the end of March. If you're living in the vicinity of Antwerp, you should definitely attend.