As cool as this is, how many peoples' employers allow them to do either personal work from the work computers, or work work from their personal computers? My company is quite strict on both.

There's a third use case: multiple identities at work.

In my case, company I worked for got acquired by a larger corp. Things happening as they usually do, I ended up having two different e-mails/identities/SSO credentials - me@old.company and me@new.corp. Most of the code I worked on was stuck on old company's infra, but new repos were developed on the acquiring corp's infra, so for years, I had to maintain two different SSH / Git identities too, and use appropriate one for a given repo.

I've not had a single employer care.

For many of the companies that I've worked at, the laptops were taken home to be used as personal computers at the end of the day and this was a well-known thing and I was often looked at weird when I said I had another laptop.

One time I took the wrong laptop in and had to work on my personal laptop in the office. It wasn't so much fun that day.