>(similar to Android, from what I've heard).
Yes, it's lifted almost directly from Android. I wasn't aware that they'd offered the option to disable the annoying SMS pop up, though.
>I found it difficult to match my mental model of an app's notification to the right settings to flip in the UI.
On Android, notification options are in the settings menu for each app.
In iOS5 there's a notification bar (similar to Android, from what I've heard). You can set SMS messages to only appear there.
It provides a welcome level of control, but I found the whole notification UI initially confusing. I found it difficult to match my mental model of an app's notification to the right settings to flip in the UI.