Good point, but it doesn't need to be anywhere near a majority. If just 1% is travelers use it, it would not trigger more than a few extra questions. Especially if those 1% are mostly computer professionals where deeper questioning hardly ever turns up anything.

One feature I'd like with this travel mode is having a log of every bit of data that was accessed during the trip. At least then I would know how much was copied. Some kind of rate limiting would be good too, so they cannot just copy everything.