I don't see why not? I can easily see the appeal in creating slides in as minimal a format as Markdown. And it has a sort of geek cachet to it, depending on the

I don't see why not? I can easily see the appeal in creating slides in as minimal a format as Markdown. And it has a sort of geek cachet to it, depending on the audience. The only real downside I see is that you can't easily use visual aides such as graphs.