For a long time, I would occasionally use my personal phone to check work email and Slack when I had to be out-of-office for an errand. They created a new policy last month that would force me to have a "work" profile on my phone if I wanted to continue using those apps. Fuck that. Instead I removed every work related app from my phone.
"Sorry boss, I can't check my messages while waiting at my doctor's office anymore.Why? Oh, because IT policies won't let me."
I'm going to quote that at every opportunity.