Universal way to temporarily reverse boot order with bcdedit.exe

Question

Situation

I've got two boot-configurations. Let's say the UUID's are {1234} and {4321}.

Default is {1234}

What I want

When {1234} is booted, I want to switch the boot order from {1234} {4321} to {4321} {1234} but just for one boot. So I want to reverse boot order for the next time the computer boots up. The problem is that I don't know the UUID's. Because the "Script" that I'm trying to write has to work on multiple computers, where the UUID's obviously are going to differ.

What I tried

bcdedit.exe /bootsequence {current} /addlast

and

bcdedit.exe /bootsequence {default} /addlast

These commands did not work obviously. Another solution I could imagine is to query the UUID's. Is there a reliable way to get the UUID's and as well to check which one is booted? Or does anyone know a command for my specific needs?

Another way to ask the question:

Given two boot-configurations. When the default one is booted, I want to boot 'the other configuration' with the next restart (and only with the next restart). But I don't have the UUID of 'the other configuration'.