The skewer is not a problem. The attachment system for the Nashbar trailer uses a skewer they provide. The skewer is threaded on each end and the attachment sleeves are essentially oversized bolts, not QR.
My LBS said that they couldn't do it. (Probably "wouldn't" is more accurate)
I'm thinking of trying to do it myself, using Harris Cyclery as the resource for parts and help. The downside there is that I will have to take it apart to find out what I need, then order/wait for the parts and then hope I can figure it out in time to remember how to ride... It would be a little better if we didn't live someplace where we can ride pretty much year around.