Cheers for this mate. How sensitive is the dial on the side? Does it ever "overshoot" i.e. go past the option you're trying to select?
Very occasionally, but mainly if I'm not paying attention to what I'm doing. I usually stay on one screen- either the main screen or the map screen. But, if you are using the map for nav and are on the main screen, it does automatically switch between the map and main screen, plus alerts you with a loud beep.
If you're on the map screen, it just stays on the map screen.
The screens are highly customisable through the app, and you can customise screens for several different bikes as well (I have two slightly different set-ups for my gravel and road bikes, mainly because my road bike has a power meter).
The maps have greatly improved since the initial release, and you can easily decipher between road types, cycle paths, bridleways, footpaths, etc.