Well wait a second. What iPhone user would even consider not syncing their contacts and calendar? If you use it with any thrust at all and rely on it, you absolutely cannot hope that something doesn't go wrong--such as a continuous reboots--or corruption--or loss. It just can't be an option. I only have around 100 contacts at the moment but I hear of a lot of business people with hundreds -- approaching a thousand or more. It's not tough.
Then there comes an issue: could you use iTunes for the data and then easily switch to MC for media? That would be perfectly fine. I'm just afraid that it will delete all your media at that point.
I bet it's a long shot and unlikely that they will support syncing but I guess I've almost began overlooking the possibility that it will sync with iPhone because if it doesn't sync the other data, then it just isn't going to help my situation. I've accepted that I may have to use iTunes, which I don't like, but there just isn't any way around it.
It's not so much the ease of syncing--type on computer and copy--as the backup. You cannot risk losing so many contacts.
Don't forget J River. If there's any chance: iTunes does sync favorite contacts, camera photos, and some other things that aren't even available to the user--they are just resynced in the event of a failure.
So answer me the question above: would only being able to sync music, photos, and videos be useful to anyone? No one is going to buy the iPhone and not use the contacts and you'd be crazy to not worry about the million events that could destroy your huge contacts list. A combination of iTunes + MC would be fine, too, but I don't think iTunes would like that. Unless MC can somehow work in conjunction with iTunes.
Any comments are very welcome. I want to understand this more--it's a complex problem as you can see.