I've tried this, and have had poor success with only about 12 eggs hatched, but someone else tried and said it worked the same. If it's the same as in D/P the parents need to be of the same country or the glitch will not work. You might have it mixed up.Is the Everstone glitch in HG/SS? If so, the glitch only applies to parents from games of different languages, right?
I have a Pal Parked Adamant Ditto holding an Everstone breeding with a Croagunk hatched in SS. Out of the last 20-25 eggs, 2 have been Adamant. :(