It would be nice if there was a button to toggle between metric and imperial units. Right now there are many steps that have to be taken to switch between units.
Since you you should almost never use the two systems of measurements together setting up either of these options: 1) Create separate Profiles for both Metric and Imperial. 2) Create custom Toot Chests with Metric and Imperial Tools
Your initial set up will take minute to set up, but in the end it will be worth it.
Remember, either measurement unit will work on any drawing regardless of the scale.
Hope the suggestion helps