I think it can work as long as it's kept simple with high contrast, low content and no transitions or animations. A good tip if you are running an event is to a

I think it can work as long as it's kept simple with high contrast, low content and no transitions or animations. A good tip if you are running an event is to ask the speakers to provide slides in PDF format (with one slide per page, no builds). This forces them to keep it simple.