I think Jones will surprise a lot of fans in Dallas who were blinded by the hype of the Marion Barber fan club.
Whether or not he is a success in Seattle is a different question. He really didn't go to a team with the best offensive line in the world, and he'll struggle a lot there.
But, for those glad to see him gone so that we can have Marion Barber carry the load, rememer this: Barber had one good quarter in the playoff game, and then averaged 2.5 yards per carry after that for three quarters, and we had a run game that was non-existent when we needed it the most in the third and fourth quarter.
Barber has always been great when he came in for just a couple of quarters, after the defense was already worn down. If we lose that punch in the run game because he is starting now, and we end up without a run game in the last quarter of games, we are going to miss Julius a lot.
Julius never fumbled, and carried the load when the defense was fresh. Barber has a tendency to dissappear for games at a time in production.
This could be a lose/lose for Dallas and Seattle if they are unable to block for him, and we find out we miss him in the first half more than people thought.