To my big suprise, when you are mounting coeurl or any other mounts, you are greeted with this:
http://i826.photobucket.com/albums/z...ps6f62ea53.jpg
Occurance: 100% of the time, any area, just use your mount and check your new name in the battlelog!
Edit: It seems that the battle log doesnt know who you are and uses a random NPC/player name instead of our character name,