Great job, but you could go a notch beyond and anticipate users needs and expectations!
As far as I know a note created in Penultimate and synced to Evernote cannot be edited, unless to export the note to a PDF format and then annotate it.
I would suggest developers from Evernote and from Penultimate to work together and find a way to allow edits and annotations from Penultimate notes once synced to Evernote, or a way to save a penultimate note in a Evernote hand written note format.
It would be an amazing add on, just think! You could create a ToDo list