Well my nickname, callsign and IRL name are all one in the same. I've belonged to a few forums but they've been for online games. I find it's handy to do so. Although the difference here is your "ingame" name will be said IRL not over some pixels. I think if your playing an airsoft game against someone you'll learn their name but chances are you'll call them by their nick. So I agree with The-Saint, it's better to just use name-tags of your call-sign because real life names are hard to remember no matter where you meet them and if your used to calling them something else then do so. But on the board it would be cool to have your IRL name under your nick. Something like a title but more of a name-tag.