A Very Rare Type

There are around 45 people that we know of in the world who have Rh null blood. Not Rh + or Rh - (or, more accurately, Rh D-), but Rh null, meaning no Rh at all. Because it's so rare, Rh null is prized by researchers and also by blood banks. So what is it like to be one of the few with this blood type?: http://mosaicscience.com/story/man-golden-blood