I changed the date format in Admin>System>Look and feel to "dd.MM.yy" which is more handy to enter manually (this format is widely used in Europe). I updated both Complete Date/Time Format and Day/Month/Year Format.
The output rendering works as expected but it is *not possible* to enter a date in this format (it still accept the usual 15/Sep/13 format). This makes the feature useless.
Did somebody try this feature on OnDemand with success ?
What could be wrong ?