Aaron, there is no reason why it can't look good and realistic, firstly, getting it done by a pro will ensure a good job, there are plenty of convincing and very nice looking carbon fibre vinyls around. Further more you can clear coat it in a gloss or a matte clear finish so it isn't too shiny.
Have a bit more of a look if you really do want the cf look without the illegality, its not such a bad option
http://www.youtube.com/watch?v=0VMVjRSMgik...feature=related
Each to their own, its a styling mod that some will like and others wont, but i think if you like it, don't worry about what others think.