POC - Combining BW Clock and Desktop Launcher to spend less time "Loading..."

Yes, the hideable widget bar is exactly the kind of thing we need. It could be added to https://github.com/espruino/BangleApps/tree/master/modules and required...

Does this clash with other apps using the setLCDOverlay or would the widgets just no longer be displayed if for example another app shows notification with this method?

Yes, it's just be the last call to setLCDOverlay. Hopefully after a while the widget bar would auto-hide and things would reset though