Let's not forget that you get to avoid being forced to unlock your device when detained if it's present, and dealing with the consequences of refusing to do so

Let's not forget that you get to avoid being forced to unlock your device when detained if it's present, and dealing with the consequences of refusing to do so if you take that route. You're essentially the key to your device, so you're essentially shipping the encrypted payload and the encryption key in different mediums, so the capture of either without the other is of little use to an adversary, assuming they don't see you as a target worth trying to break the physical security of the device for. If you haven't actually done anything wrong, that's probably a safe assumption most the time, and it's likely not any worse than taking the device with you if you have.