If Evernote chooses not to integrate PDF into Penultimate, users can install RightSignature. It turns notes and attachments into PDFs and from the same interface sends them out to be signed. But of course, they're not sent anywhere. A notice is sent to the recipient for a request to sign and you'll know the minute they do. For virtual companies where signers are not right down the hall, this kind of app is invaluable.