I've been a member for about 4 months, and although i haven't had work directly from the Fed, I do believe that it has helped me get work, especially commercial.
Domesticly, not many people have ever heared of it, but when I tell them that I'm fully insured, a member of the fed etc. they seem genuinely impressed.
It all helps to create a good image. I think it is well worth the money for that alone.