In four years with the San Diego Chargers, Scott has 14.5 sacks, but hasn't ever been more than a rotational, situational player. With the Vikings, he likely would get the opportunity to take regular snaps on third downs. In 2003, he had a career-best 6.5 sacks, getting sacks in five games. He has started only one game in his career.
With Minnesota playing a 4-3, the opportunity to return to the form of 2003 was far greater and more playing time appears to be on the horizon.