Thanks for the links! I never have an iPhone, nor am much experienced with Android phones. With this in mind, I will say that journalists are targets of a specific kind. Threat models for them probably are different from those for others. Their social circles and contacts are vulnerable in physical space, for example. Even if a journalist has secure devices, s/he is threatened whenever people s/he cares are threatened. In this sense, it will be good to decouple what a journalist is doing (and the devices s/he is using) from the person s/he is. If I were a journalist, I would want my work phones and computers disposable and de-linked to my identity at all time. On the other hand, I don't know if this is workable in practice.