When you have to restore a backup, you don’t want to rely on a password that you never used before and that you may have or may not have available. This is especially true for mobile devices.
I have been using cloning tools since the very first one became available decades ago. My advice is to never ever use a cloning tool for backups. Sector-based tools are the worst of all. These tools were never built for creating backups. A backup is not just a copy of your data. For a professional backup strategy you need a tool that was made for this purpose. And when it comes to backups of mobile devices, you must ensure that an end user can access single files without the help of an admin and even more important without any fancy passwords or even the original backup tool being available. This can all be done with encrypted drives and encrypted backups.
Just because something is doable, doesn’t mean it should be done. This particularly applies to unstable and unreliable Microsoft environments.