I think it's perfectly fine to use a UISwitch outside a table view. As long as it "looks like" the Settings app (switch placed horizontally beside some label that describes what it does) so that users are familiar with how to use it, it doesn't matter what type of view it's contained in.
I have a couple of places where I use a UISwitch for a settings-like behaviour, but not in a table view, and they were approved just fine. The key is that it should be intuitive to use. Hand the app to a non tech savvy person and watch them to see if they can do stuff without you having to explain it.
That's kind of an odd guideline since it's indistinguishable to the user (and therefore App Review) whether you are using a table view, scrolll view or non scrollable view of some sort.
There are MANY examples of apps on the App Store that use switches in places other than tables (including most of mine).