Yep. As long as the user name doesn't already exist, we can change your user name if you really need it. It's also possible to merge users if you have 2 accounts.
You know you could just requested a change in name, happened quite a few times lately :) Real names work better for remembering the artist in most cases, though you are stuck to that too, no hiding
Using my real name for quite some time except on gaming servers where I am: mze ( just short and easy to remember). In my case my name is Martins Zeme because in my native language there is S at the end. But usually everyone calls me Martin. Still new to this community so don't know everyone yet but congrats on the name…
I use my real name on GameArtisans, but despite having used it since 2007, it never stops being odd when complete strangers address me by my real name. And remember that people on the internet will misspell anything and it's probably more insulting now, John Russ :p .
I stopped using "handles" and went to real name because it makes it easier to connect when on interviews and other websites. Also, I just don't like being referred with a name outside of my real one: "Oh, you're Lamont?" (Dude, he's an asshole and doesn't know shit...)