We are testing integration with Evernote via Zapier: https://plus.google.com/b/114021845786371597651/+Checkvist/posts/SoiDZevJKdZTroy Christmas commented
Checkvist already integrates with Evernote using TaskClone (https://www.taskclone.com). TaskClone takes Evernote checklists or note titles and sends them as tasks to Checkvist. The resulting task has a link back to Evernote (web and/or app links).
You can see a comparison of TaskClone vs. Zapier vs. IFTTT at http://support.taskclone.com/article/88-compare-taskclone-with-zapier-ifttt-and-evernote-reminders