If you think about the sky-high roaming fees that you would pay to use a U.S. smartphone abroad (Verizon, for example, will loan you a GSM regular phone for overseas travel), you'll likely find that by getting a "travel iPhone" you can recoup the cost of the second iPhone in one or two trips, then pay less from that point on. I know many people who have an unlocked regular GSM cell phone for travel overseas. I've done this myself in Europe using a phone that my brother-in-law picked up in Australia, so I know it's a workable option as long as the phone isn't locked.
In a business setting, people could share the "travel iPhone" -- just be sure to wipe the device before letting someone else use it. With an iPhone, iTunes will do this automatically if you sync the iPhone to a different iTunes account. And remember, iTunes will copy all your music, videos, and apps from your Verizon iPhone to your "travel iPhone" when you sync, so you'll have your usual apps and media when abroad. Only the number will change.
It's admittedly a work-around, but for those of us in an area poorly served by AT&T or T-Mobile, it has the virtue of working.
This article, "World travelers' iPhone and Android dilemma," was originally published at InfoWorld.com. Read more of Galen Gruman's Mobile Edge blog and follow the latest developments in mobile technology at InfoWorld.com. Follow Galen's mobile musings on Twitter at MobileGalen. For the latest developments in business technology news, follow InfoWorld.com on Twitter.