Rather than carrying your SIM (and the data it contains), consider buying a temporary SIM once you arrive at your destination. Many airports have kiosks that sell prepaid SIM cards that are inexpensive and come with prepaid data and minutes. They’re perfect for traveling executives, won’t give an attacker any worthwhile data if they’re stolen or confiscated, and can be disposed of when you leave.
(Images via whatleydude‘s and 30234244@N02‘s Flickr photostream)