Indeed, I've "invaded" France and won several times with nary a blink. In one case the immigration booth wasn't manned and we just walked in. In FRA this past April I was stamped in and out without speaking one word and without the passport being swiped.

That said, I don't see it as much of a security risk as is implied in the OP. With the number of checks that now must happen even before boarding it is rather unlikely that there will be much of an issue.