Good question, I have nothing to do with those so I can't say for sure. BUT, I do believe that they are still in full production. So I would say to give her a call. I doubt you will find many pairs up for trade though. Folks just don't seem too willing to part with Robs stuff.
Best bet. Drop her a phone call. Be patient, she is in and out of town alot. It may take a day or two for her to get back to you.