I understand your point but we officially don’t support qTranslate x or any other translations plugins except Polylang and WPML as we believe this is the right way to handle multilingual content in WordPress. Additionally CN is handling it’s input settings using WP settings API and that is the compatibility we’re aiming at.
But on the other hand CN offers filter hooks that probably allow you to create translations using any multilingual plugin out there and that’s what users, including qTranslate users, are doing.