There's just one problem: increasingly, everything that makes a phone a "daily driver" is the thing that can only work on the "important" phone. Banking/finance, government services, commerce, work, communications (thanks a lot E2EE), and DRM-ed entertainment - all the major players here are locking their software down and relying on remote attestation to ensure their locks stay shut.

With this being the trend, you're already more likely to leave what you called "daily driver" phone home, and only take the "important" one with you.