Thats a fairly new payment method I've heard of, which usually means its not popular enough. Also considering reversing of payments is easier than paypal, well needless to say someone will not risk their irreversible bitcoins for this.
Edit: To actually answer your question, withdraw the amount to your bank and then do cash to bitcoin or similar trade.
Dwolla has been around for a long while. Nobody uses it because ever since ppl figured out how to cheat their system.. it became very Unpopular.
OP go to localbitcoins.com surely someone there takes it.