On a recent trip from the Far East my father had whisky in a sealed plastic bag which he bought in CAN and upon transit in CDG had it taken off him when passing through security en route to EDI. Same thing happened to me flying from GIG via CDG to LHR (but given my dad's earlier experience kind of expected it).
The problem is, the non-EU airports think they are providing customers with the correct kind of packaging for EU regulations (the shop assistant in GIG assured me it would be fine). This must be leading to passengers returning to the EU to be losing millions of Euros worth of Duty Free every month! Some guidelines need to be issued to prevent this, or sales of Duty Free will surely plummet.
At least the dinner parties will be lively at the homes of security agents wokring at CDG - full of free booze!!!!
XSB