Autocomplete SelectedItem template

The ItemTemplate allows for an informative list of values to be displayed to the user for selection.  For example an employee may be displayed as [first name last name (EmployeeNo)]

However when an item is selected from the list the autocomplete only shows the bound value (e.g. EmployeeNo).

It would be good if the selected item in the autocomplete control could be customised to be either:

- the same as the ItemTemlate
- customized via it's own SelectedItem template

For anything other than simple scenarios the usability of this control suffers without this feature.