First time experimenting with Zbrush and live Boolean from a few months ago, just never uploaded it.
All built in Zbrush using live booleans. Really loved the feature, so useful and incredibly powerful.
I've since used it on multiple projects to create that machined look on hard surface components.
Only downside is retopology haha, but it's extremely useful on complex shapes, ones that are hard to build from a typical quad flow technique (at least for me).