The reason why Dallas wants Jenkins to start is not only b/c he is a 1st rounder, but b/c he is better making plays on the ball. Scandrick is tougher and more consistent, but he has hands of stone & still needs to hone his ball instincts.
If anything the Cowboys need to be flexible, start Scandrick against heavy duty running teams (Steelers, Titans, Giants, etc.) and start Jenkins against pass heavy teams (Chargers, Colts, Cards, etc.). Both will have significant playing time I have no doubt. I just want both to continue to improve AND stay healthy (that means YOU Jenks).
One aside, while Jenkins could/should have stayed w/the WR on the TD, it was Hamlin's responsibility ultimately. Cowboys were playing zone (which is a *** anyway that close to the endzone), and Hamlin was late (per usual) getting over. Not only that but Hamlin is still bouncing off tackles (see Javon Ringers big run), not good, not good at all.