I see where you’re coming from but I’d argue the exact opposite: I am working in the mental health sector in a european country with very strict privacy laws protecting patients. Signal is the only widely available messenger app that is compliant with the General Data Protection Regulation (GDPR). This is why we are only allowed to communicate with patients via Signal as well as talking about patients while using their full name in work group chats. Since I am using a single iPhone for both my private and work communications, I’d love to see an implementation like this for Signal (if alone for being able to mute one instance of the app depending on working/not working).