Everyone can come up with technical ways to backup and wipe. The most interesting question is how you answer questions like "it's clearly wiped/burner, do you have backup accounts, sir, and how you're gonna restore and can we have these passwords?". Because everyone is a hacker hero until faced with the option to lie to border control and get called out either way.

Your worst enemy here is a thought that they are stupid and that you can confidently lie in a tight room, surrounded by police officers. Neither is true.