Facebook Usernames? Which to choose?

Great! I see that Facebook is now going to dole out usernames. Well, actually, you get to pick one out on a “first come, first served” basis. That might make it easier to find folks on Facebook, I see.

My quandry is which username to use? I like my techyfeely moniker and that is personal. I also have been using ajwms for a long time now and it has become my professional username as well as some personal.

What does a girl do about this one? Is it best to have only one username and stick with it or is it good to have personal and professional usernames?