Unfortunately, if you opt for delayed cord clamping you cannot donate cord blood to a donor bank. I asked my OB about this because I wanted to donate and his opinion was that why would 2-5 minutes matter when you have had blood flowing through the cord for 9+ months. So we are sticking with our plan to donate in the hope that it may help a sick child in the future.
You raise a very good point buliej. Unfortunately there's no bank for cord blood in SA so we decided that making sure DD got it all at birth was the next best thing for us to do.