Re: This is why I've never adopted iCloud
I think I just picked up good habits re backup after years of using Palm handhelds, which had a habit of losing or corrupting data every now and again. I used one for my scheduled jobs, which changed daily, so I just backed up every time I synced the calendar since it only took another couple of minutes. Since I usually charge my iphone from my USB hub, its no drama to do a backup to itunes a couple of times a week.
Apart from any documents that might be on the phone, I'd imagine the cops would be most interested in phone records and mails anyway, and that metadata they can presumably get from the respective providers anyway without any access to the phone itself.