I flew this route westbound a few weeks ago. Incredibly civilized flight times, no need for a 4:30am airport arrival to connect at ATL (DL) or DFW (AA). Easy upgrade (PM at the window) on a Tuesday, the checked bag was waiting by the time I got from the gate to baggage claim, and I had time to pick up some lunch before my 1pm meeting on the north side of Austin.
The eastbound flight time is not particularly great. If the 717 sticks, perhaps they'll send it on from Austin somewhere else (LAX?) and try to get a return to RDU which leaves closer to 2pm so that people can work a morning and then travel.