OK, no one needs to watch out, calmed down my first reaction.
I've seen NEMA plugs with badly bent prongs, I'm sure they'll eventually break. Also seen Euro plugs with bent prongs (the sleeving makes them weak) after they've been squeezed behind a closet or something else, however they probably won't break. They just stick out of the receptacle at a weird angle.
Why switches instead of recess or sleeving? I'd think that every user-operatable part is a weak link. Do you really think that Joe Average will switch off the receptacle each time he uses it?
I have to say, swiss type, recessed and/or with sleeved pins (best recessed with Schuko-like grooves on the sides for stabilization of Euro plugs and the suggested swiss type), rated 16A is my favourite. With decent Edison base lampholders I can't see any need for polarization.
