You don't have to be 007 on the next plane for Stuttgart to keep your passport nearby. It's just that traveling while keeping track of Euros (or what's left of them), your plastic, pounds, dollars, passport, license, number from the brunette in the bar, etc, is a drag. So just keep it all together in this case. Keeps you focused on the important details, like buying the brunette her next drink. Travel well! Imported.