Apple's iPhone functioning with Vodafone?

Here's an interesting one. While just about every citizen in Europe twiddles their thumbs and awaits an iPhone announcement for their side of the pond, more than a few impatient souls have been looking for ways to utilize the device in their homeland right away. Most recently, however, is an intriguing report that a US-sourced iPhone is functioning fine (save for the lack of visual voicemail) on Vodafone after a user swapped an AT&T SIM card into an O2 XDA, had the carrier add it to his current contract, and then stuffed the now-Vodafone-compliant AT&T SIM back into the iPhone. Interestingly, hordes of IRC participants are balking at the story, suggesting that SIM numbers are network specific and that Vodafone should not have been able to pull off the aforementioned feat of magic. Hmm, we wonder if Vodafone's bubbling excitement to get ahold of Apple's handset could have anything to do with it?

Read - US iPhone works with Vodafone
Read - Vodafone "looks forward" to 3G iPhone