Seems that you aren't readin my append carefully ...Having to sign-out on a PC that is at home in order to sign-on to the laptop you carried with when travelling isn't that easy .... since travelling implies not being at home...
you don't understand. cc doesn't work the same as perpetually licensed adobe products.
you can sign out of your other 2 computers using the 3rd computer. ie, if you arrive at the airport with your laptop and are unable to sign in because your office and home computers are signed-in, no problem. you can sign out of the home and office computers using your laptop at the airport (or another country). i do it frequently and i never remember to sign out before leaving. frankly, there's no need to remember because it's so easy to sign out/in (as long as you have an internet connection).