About reversed hot/neutral. We have these[1] symmetrical adapters in Europe. How are you supposed to know the proper orientation? You are not. Because you either have an earthed metal case or you have a double insulated device.
My magsafe adapters have a "double insulation" symbol, a tiny tiny one near "UL Japan", but still need a earthed prong to not feel any shock from the laptop metal case.
My magsafe adapters have a "double insulation" symbol, a tiny tiny one near "UL Japan", but still need a earthed prong to not feel any shock from the laptop metal case.
1. http://images.apple.com/support/assets/images/products/ac-wa...