Switching back and forth between 3G and iphone4

[tirexstorm]

I will be traveling soon after the iPhone4 is released. Assuming that it is not jailbroken at that point (or assuming that jailbroken i4 cannot be tethered without paying AT&T's monthly fees) can I easily switch back and forth between my 3G when I want to tether and the new iphone (all other times?)

Is it as simple as taking the micro-sim out of the new iphone and putting it (plus adapter) into the 3G? Or do I have to use iTunes each time to set everything up?

 

[Scarlet Fever]

If it's anything like the situation before iPhone 4, you shouldn't have any problems. Your music and other content won't be transferred, but you will have your cell details intact.

AT&T have really gotta pull their act together. I've been tethering since September (i live in Australia), with no extra monthly fees at all.