I don't think we have any intention of supporting -read
Does that mean no intention to support clipboard read access at all, just not the current specificatioo that includes support for read access without a user gesture? I'm not sure what a legitimate use case for reading the clipboard without a gesture would be. But users of web-aps expect to be able to paste into rich documents using app menus (including custom context menus). As I understand it, currently the only way to do this is with a browser plugin, and maybe showing a dialogue to the user prompting them to install the plugin or use the browser keyboard shortcut.