Ill take your word for it as I have not seen film of Jones playing, but I have seen film of Sharpley and he looked to be both mobile and a good passer.
I have nothing wrong with Jones and Frazier ( I am also excited about their future at ND), my point was that Sharpley will have a lot more experience with Weis' offense then any of these two guys and he will also have Quinn teaching him from direct experience. Sharpley is thought upon as a talented QB by the coaching staff, combine that with experience, I just don't think we should write off Sharpley so quick. He wasn't exactly a no name coming out of HS either.
My other point is I would rather have a Tom Brady or Brady Quinn type QB in the game than a Mike Vick or Randell Cunningham. Not to take anything away from those two great quarterbacks, but I did watch the Falcons game this weekend and I thought Mike Vick was inconsistant with his accuracy, but Tom Brady (a pure drop back passer) was always accurate. Its very rare to get a Steve Young type of QB one that can scramble well and also throw strikes. If I had to pick between the two I would pick a pure drop back passer and allow the two other backs to run the ball.
I may get flamed for saying this but QBs that have a tendency to run are more prone to getting injured (Vick, McNabb, Cunningham, Young) these guys were always getting hurt.
Where as Elway, Marino, and Fouts rarely got hurt.
I mean realistically if you counted the average QB run it would be around 5-7 yards. Who would you rather have in for 3 and 15, an obvious passing down.
Also scrmbling QBs although are able to get away for a 12 yard gain at times but they get sacked a lot more just because they rely on their ability to scramble too much, instead of throwing the ball away they keep it and get sacked.
These are just the things I have noticed. And although they are not right (every situation is different) in all cases all points have even a small amount of validity.