@wgrant wrote:
I would be very happy to have a v1.0 of this feature which added nothing but allowing multiple Obsidian instances looking at the same vault.
Agreed, though I think it would be worth thinking about how workspaceLayout (in .obsidian/config) is handled in that case: does each instance remember its own layout (hopefully yes), or is it going to be like the symlink kludge I describe below…?
@Dor wrote:
I simply expand the Obsidian window to cover two monitors
Glad that works for you, but that doesn’t work for me as my monitors aren’t set up like that: I use three screens, all at different resolutions; one of them is vertical, another is my laptop screen; I really treat them as separate displays, not just parts of one big one.
@spark wrote:
There is a solution, put the vault into an empty folder, and open the folder as a new vault.
Then you have the same content in two vaults.
And if I want three windows, I have to nest it three levels deep? And four? I’d call that a “deeply unsatisfying kludgey workaround” rather than a solution, personally. 
I think I did also try setting up a soft link to the folder and opening a second vault through that: still kludgey and would scale more easily than nesting folders — unfortunately it doesn’t work well because each instance shared its .obsidian/config, so when you save and exit, only one set of workspace layouts get saved (I guess the last one that closes).