Correct, looking to stop (honest truth here) my cat from changing things. The hazards of a home studio...The lock feature is per button, not for the entire control surface.
Something you can do, is delegate all of your stripes to something you aren't using (perhaps OUT8?), that way any button presses don't matter. I know that doesn't stop everything, but I'm thinking you are looking to prevent an accidental button press, not some some that is going to come in deliberately and change things.