I believe it is good form to keep work and personal machines completely separate, including phones. If you ever have to hand over your devices for discovery in a law suit I think you will come to the same conclusion.

I very much agree. Retired now but I used to have a separate phone for each major client for HIPAA compliance but it's good advice everywhere (and $50 year-old android phones and $15/month Tracfone accounts aren't just for criminals!)