Crafting BYOD policies isn't for the faint of heart, even for U.S.-only policies. The IT department at GAF Materials, for instance, has been able to support BYOD smartphones in the United States for a while. Yet only now are the final legal pieces of the policy being put into place and the program able to launch.

This lengthy process has slowed BYOD adoption. "Initially, everyone was going BYOD," says CIO Adam Noble at GAF Materials. "But we're starting to see some pullback."

You'd think forcing employees to shell out money for a personal phone to be used for business purposes, particularly in this economy, would receive a fair amount of blowback. However, this wasn't the case at Ingram Micro, says CIO Leone. Most people either already owned a smartphone or wanted one and saw this as an opportunity to make a purchase.

"It was less about the [cost of] the device than the variable cost," Leone says. "Would the reimbursement cover my usage? Did I get the right plan that will balance my business and personal needs?"