I installed this on my phone last night.  I was pleased to see when I had an IM, my iPhone 4 let me answer that while the sync was happening in the background.  All went quite smoothly.

Now I would like to install this on my wife's phone (my old 3G).  Since the 3G doesn't support multitasking, will there be any issues if she were to answer a text message or something in the middle of the initial sync?  I realize it will stop running of course.  But will it pick back up where it left off after starting the app back up or will the sync need to start from the beginning again?

PS, I love the fact that the phone won't turn itself off while syncing! That was a great feature.

Thanks Ken.