I upgraded EB today and then tested AMP, and it's decent, though some of the formatting is off (like h2s touch the side of the screen). But bigger than that, it looks like you're generating a custom mobile menu when viewing an AMP page and that menu does NOT honor Joomla's option to make a menu item invisible. As such, items I have in my menu that aren't VISIBLE in the menu, ARE visible in the AMP menu. That's a problem I'd love to see fixed.