Apple Thoughts: Hotspot Option Creates Choices, MiFi or iPhone?

"Wednesday's anticipated Verizon iPhone launch event offered one surprise: users can share the 3G data connection with five devices, turning the iPhone into a mobile hotspot."

And so the dilemma is to keep the MiFi Mobile Hotspot or go ahead and make the jump to the iPhone 4. I too, am going through the process, trying to determine if I should keep my Verizon MiFi. On one hand, it would be handy to have another iPhone just in case something happened to my current iPhone on AT&T, allowing me to still have communication capabilities, something I cannot do with my MiFi. And I wouldn't have to carry more than one charger like I do now. And the issue about not being able to use voice and data simultaneously would be moot since this isn't going to be a primary phone. What are your thoughts?