With nearly all easyJet demos being played on the pre recorded announcements in a very slow and deliberate manner this should be extremely rare and due to the config of the easyJet A320 there is no bulkhead for the CM to hide behind, unless they stretch the inter phone to the other side of the cabin. It's all personal preference and not an airline specific thing. There are those who will sit and read it, those who'll stand, but there's not much room when CC4 is doing the demo and the CM is reading it. The CM will always be behind and to the side of the Cc4, and if they're tall then their face will be hidden by the over head locker.