For anyone who is coming for search of a Linux client, there is a workaround which to a large extent works as a "standalone" application.
Chromium can run any website in it's on window without tabs, bookmark bar, search bar, etc. For this, one needs to run as follows:
chromium --app=https://www.evernote.com
This can be added to the desktop as a launcher, with it's own icon if that's what someone fancies.