It's not open source, so that non-programmers aren't at a disadvantage. But I'm sure Tom would be interested in what you can do. The site runs on PHP, code is stored in SVN.
Oh, and are you familiar with "Doctrine"?
Doctrine the ORM? The Hibernate clone? I generally don't like megalith ORMs but I can see the merit of using them in some cases.
To answer your question, I've not sed Doctrine in particular but I have used a lot of ORMs across various languages.
