Evernote's Mac client + Marked or similar: basically just setting ~/Documents/Evernote Selection.md to the content text of current note converted from HTML to Markdown.
First,
$ [sudo] pip install html2text MacFSEvents
Then launch it and enjoy.
P.S. guess what, ⌘S works in Evernote.
Nevermind -- I got it -- my plist had the wrong location of the script - 👊