Webex has the ability to host 3rd party apps within the meeting window. It would be great if Evernote could be available in the Webex AppHub https://apphub.webex.com/ to be side-loaded in a Webex meeting for note taking purposes. There are some productivity & note taking apps already available, like BasicOps. You could look at their integration as an example of what a good experience within the Webex app would look like.