This is also appealing to miners who just want instant cash, since they'd be paid in USD.
Please explain how this would work faster than the current methods. You would still have to link a bank account and those transfers are just as fast now as they can be made... ie: Exchanging BTC to USD on MtGox is a slow process. In either case you're still mining for BTC and then converting it to cash.. only now there is some middle man handling the work request (which I'm sure takes a fee similar to MtGox).
Maybe if someone explained this a bit better I'd see where the benefit is.