Can you FaceTime over 3G with jailbroken iPhone 4? Can you FaceTime over 3G with jailbroken iPhone 4?

If so, can you FaceTime in following situations?


A initiates FaceTime over 3G with jailbroken iPhone 4. B is also on 3G with jailbroken iPhone 4.
A initiates FaceTime over 3G with jailbroken iPhone 4. B is also on 3G with non-jailbroken iPhone 4.
A initiates FaceTime over wifi connection. B is on 3G with jailbroken iPhone 4.
A initiates FaceTime over wifi connection. B is on 3G with non-jailbroken iPhone 4.
Yes to all of your questions.

The Jailbreak app My3G tricks your iPhone into thinking it is on WiFi, enabling you to use FaceTime over 3G.

Source: http://www.macrumors.com/2010/08/02/facetime-over-3g-comes-to-jailbroken-iphone-4s/