[kepano]

What do you mean by "multiple vaults hardly work"?

If it helps Obsidian has a newish command called "Change vault..." that switches vaults without opening a new window.

[on_the_train]

But I don't want to change vaults, I want to work in both. I want to search for something and get results from all vaults. Or rather: I want to select which folders to sync - that would effectively be the same for me.