[itsme]

My settings are 'Let Mobile Sheets Manage My Files' OFF and 'Expose Database File' ON.
My score files are in a folder _MobileSheets within alfabetic subfolders A to Z. A mirror of this files and folders structure is on my PC that is synchronized with TeamDrive to all my bandmates and on a USB stick. 
So in case of an emergency I can navigate to the files pretty quick and open the PDFs with another PDF reader. For ChordPro files I still have Chordinator on my tablet, I think I will keep it.
By far not as fast and comfortable as using MSP, but I could get through.
And there's my binder as a paper backup, but this will soon be outdated.
Together with the .MSB backup files I copy the MSP database files to my PC.
My settings are written down manually in a text file that is on the tablet and imported into MSP.
Hope that I'm prepared for many cases...