Although the media and Apple (NASDAQ: AAPL) have pushed the iPhone as a consumer device, apparently some business users are finding out that they like it too. Staunch business customers who are tech-savvy, complain about the lack of email flexibility that the iPhone provides, citing Microsoft Exchange and RIM BlackBerry Server functionality being absent. To some business customers who need mobility in the first place, though, the device is still easier to use than a Windows Mobile device or a BlackBerry.

SAP, the German computer software giant, allows the use the iPhone for business, even letting employees to work on their iPhones outside the office. Salesforce.com (NYSE: CRM) is another company that sees the usefulness of the combination iPod/cellphone as a business tool, regardless of how it's always been marketed -- as a consumer device. So, the large question is this: could Apple's iPhone eat into the huge portable email and web browsing market share Research In Motion (NASDAQ: RIMM) now has with its BlackBerry device line?

When a senior executive from SAP states that "It's fun ... it's so popular," one has to wonder if teenage peer-pressure vernacular and groupthink carries over from Apple's marketing overlords into the business world. After all, Apple is more successful at marketing than anything -- and that's what's responsible for its huge success in recent years. Business users, however, demand logic and ROI, not marketing fluff. The iPhone is the real deal, combining both functionality and marketing. With a real web browser and forthcoming applications, it could indeed become a business tool of choice. Once the iPhone becomes compatible with RIM or Microsoft corporate email systems, watch for sales to become even hotter. Don't think Apple doesn't have this functionality waiting in the wings once a 3G iPhone arrives next year.