Skipping over why do you think "likes to code" is important metric when evaluating candidate for a _job_, is it common in your company to interview people on weekends?
A job as a developer is making technology do things people want. It is important to both like people and technology -- and be able to work in both seamlessly.
Whenever people are available we can see how they'd work out. Sometimes it's a Saturday, sometimes a Tuesday. I think you're reading far too much into my comment than was intended.
