That's odd, now that you mention it- I'd think it would be the other way around, as PME & shared earth/neutral is illegal in the US but more prevalent in Europe.
Do you mean PME as in the British sense (Protective Multiple Earthing) ?
It would still be against our "code" to have a shared neutral/earth at any point on the customer's side of the main service equipment (including any multiple bonding on a generator which would result in neutral current being shared on a protective grounding conductor).
The multiple-earthing aspect of PME applies only to the distribution side of the network here, the last point at which at parallel earth can be applied being at the service entrance to the premises.
Continental Europe is another story.
