[kh99]

I guess I'll answer since the author hasn't been around in a while: You could add additional formats, since with this mod you have to manually create the custom profile fields anyway. You would need to add any additional formats to the custom profile field(s) and to the code in the plugin. (And in any case the plugin would probably need to be edited so that it's using the correct custom field numbers).

To allow a user to enter a custom setting you could create another profile field (or two, for date and time) that are text fields, then have each dropdown have an option for using the custom format. Then the plugin would have to check for the dropdown field being "Custom", and if so use the content of the text field as the format, like:

case 'Custom Date Format':
        $vbulletin->options['dateformat'] = $vbulletin->userinfo['fieldX'];
        break;