IBM announced Lotus iNotes this week, bringing Notes calendar, e-mail, and address book access to iPhone. It looks like this approach is based more on providing a stand-alone iPhone app rather than synching the iPhone’s own apps with Domino as is possible using Microsoft ActiveSync with Exchange. Still, this just knocked down another argument for using the iPhone in the corporate environment, especially when the cost of an iPhone is on par with most BlackBerry’s. But IT architects need to understand the impact on their server and network environments of enabling their remote users to sync directly with messaging servers versus using a hosted proxy in the RIM/Good models.