Hi Peter, is exactly what I did.. but I get the mentioned wrong behaviour: date pattern is always dd/MM/yyyy even if I change the user language.

English culture – browser lang It
http://imgur.com/2Zybg0q

English culture – browser lang En
http://imgur.com/ee74eKQ
As you can see I see always “10/02/2014” in the textarea, I expect to see 02/10/2014 when I use English culture…
Everything else works fine (opening the calendar shows correct localized labels for days, month, and the first day of the week changes between Sunday and Monday).