I do something similar but not quite the same with my iPad: it has most of the same (non-work) apps that my phone does, but I've disabled all notifications for all apps so it never yells at me; it's an entirely chill-out/self-directed device where nothing ever grabs at my attention
I treat my main phone as a notification entrypoint; trash-notifications are turned off, of course, but every messaging, calling, email, etc app has them turned on. If I want to know if anything relevant to me has happened, I look there or keep it nearby. If I don't have a notification there, I know nothing has happened
On my iPad, even messages with friends, emails, etc are all blocked. Not even red badges on the app icons. Nothing that can possibly prompt or notify me in any way. I don't think I could get away with that on my main phone
