Replying here because I’d like to see it work for me as well.
I’ve got CIFS Documents Provider mounting a shared folder from my home storage via a VPN. Once I enable “use as local storage” in CIFS Documents Provider, the is discoverable to Obsidian on Android, but I get an error message and it doesn’t connect.
My temporary fix here is to use another app to sync the shared folder to a local folder with a sync app like FolderSync, but now my phone notetaking experience is busy and clunky, requiring me to open FolderSync and initiate the sync before starting up Obsidian if I’ve made changes to the files on any other devices (which is common because I’m mostly a PC user).
It would be really helpful for me if Obsidian could just treat my shared folder as any other storage if it’s already recognized in the file picker, because I could have instant parity between all of my devices.
I have the same setup too going at the moment, and all its doing is just draining more battery than it should’ve if Obsidian could access my mounted device.