I haven't done the survey yet, however, my car is a 2012 SE, build date 03/19/12. I do NOT have the reinforced brace, however I have not heard any noticeable clunking and the brace seems to fully contact the top of the strut tower at all points.
EDIT: Survey submitted.
2012 Focus SE Hatch 5spd sport package, Tuxedo Black Metallic
Road Magnet springs and fuzzy dice on the mirror