"...But the idea description also sounds a bit like shared device usage, where you ideally are able to have multiple profiles on a devices..."
Michel, not really, as this needs a login/logoff of the entire device which is NOT needed and wanted on our end. All apps are used by both and the manager is allowed to see mails and so on send by store staff account but not the other way around. So they have just a secured area for 1-3 apps but the rest of the device stays.
This also saves time as the login and logoff on the entire devices costs time and can be forgotten. For example the secure folder, how Motorola provides, locks the secure folder (and all apps from there) already when device is locked. This is save and fast handling and no shared device needed which make sense in other environments but not ours.