Evernote's strength lies in its Desktop application and very useful clipping service.
The fact that Evernote uses its own cloud storage instead of say an encrypted folder in Google Drive/Dropbox etc is a negative of the service. Sync is required but implemented in the most undesirable way in Evernote currently.
Paperwork is promising, but seems to have replicated the negative of Evernote, while foregoing the reason why people use Evernote in the first place.
So, if you want to Paperwork to take off:
1. Implement it as an offline Chrome App with Dropbox+Google Drive sync. 2. Implement a web clipping+screenshot extension.