These shortcuts are greyed out for me when I'm in a saved window.
This would be an okay solution if it would work for me.
But there is an argument to still have a shortcut to go to your 'working'session. If you have switched e.g. to three consecutive saved windows, you'll have to hit 'Go to Previous Window' three times before you're back in your 'working'session.
First, I'll have to find out why these menu commands are greyed out. Maybe hijacked by another app, but ShortcutDetective doesn't find anything. Not even Orion.