I am exactly in the same case, I tested all kind of solutions to have something really usable with Linux (Web version, a dedicated Windows VM, all third party apps) I'm just tired of paying a service that offers no solution for Linux users.
Here is my solution that can possibly interest people who own a Synology NAS in this forum.
Note Station can be installed via Google Chrome web store, it's not a simple web page, it's a real app and is fast.
And there is a killing feature -> import from Evernote! on 1 click I have restored all my books.
Negative point, I lost a great Evernote feature (send note by mail).
- All my datas are now stored in my NAS, and I can make an automatic encrypted backup on the cloud.
- The Synology web clipper works very well
- Android version also available (iOS also I suppose)