I know that there is an official Justice League Unlimited Hawkman, but I like this custom quite a bit. For one thing, the wing harness and chest piece are not just painted on, which is my main complaint with the actual toy. The Honor Wings are handled very well as well (they are made from cardboard, believe it or not), and the face looks a lot more like the cartoon model.
There's a great picture in the thread of Carter with Glassman's custom Shayera in her "Earther uniform" as I call it. (It really is unfortunate that we never got Hawkman and Hawkgirl together in their proper uniforms on the show. Ah well.)
You can check out this page for more Hawk pictures (about 1/3rd of the way down) as well as plenty of other custom JLU-style customs. Very neat stuff!