When using Switch 1.0.1 via the built-in Android browser (tested with Android 4.3 on both real devices and the emulator), clicking/tapping the switch often results in it being toggled twice, so it ends up at the same state as before.
E.g. switch is in OFF position, click/tap it once, it switches quickly to ON and back to OFF.
Two valueChange events are generated.
It does work fine in Chrome, though.