What do you consider the Canadian format? Most people I know prefer YYYY-MM-DD as it's non ambiguous. Anytime you see XX-XX-YYYY (or XX-XX-XX) it could just as easily be be little endian or weird American.
All three date formats are used in Weekle when set to Canadian mode, and fully numeric d/m/y or m/d/y dates are only used if the date is >12 to avoid ambiguity.