I'm a developer, and I'm impressed with ios5 - enough that I'd consider running it on my primary phone. But one thing I haven't figured out - I share a mobileme account with my spouse, to sync calendars and contacts, primarily. I'd like to use the icloud syncing, but stay in sync with her phone, which I'm not ready to upgrade to ios5 at this time. Anyone know if you can have one device on ios5, and another on 4.3.3, and sync calendars and contacts? If I'm syncing my phone to icloud, can I continue to sync to mobileme as well?