To your first point, if you have two phone numbers then you're probably keeping them separate for a reason, and so their contacts should be kept separate by the

To your first point, if you have two phone numbers then you're probably keeping them separate for a reason, and so their contacts should be kept separate by the app too. As for your second: what are the "ends" you're taking about with this "end to end encrypted contacts" idea? Certainly, a contact list has to be visible at the device--otherwise it's useless. Where else would you want it to be visible?