Unfortunately this only works with hosted 1Password (as far as I can tell), there doesn't seem to be any support for self hosted vaults. Can Roustem or anyone else from 1Password team clarify this? This was the precise reason I switched to BitWarden 6 months ago, needed a solution where my passwords didn't leave my network.
I'm no Roustem but I'm close. :) You're right, 1Password for Linux integrates tightly with the 1password.com service and as such does not support local vaults.
There’s no way I’m moving to a 1Password account, but I might just switch away entirely the next time I need to pay for an update or whatever, given the apparent lack of interest in serving my needs despite the amount of money I’ve paid for updates, etc. to date and the fact that it’s clearly technically possible.