I'm not exactly sure how you define "Traditional Scrambler" but I think the best way to clarify your point is through comparison. Dak is not a scrambler in the Michael Vick/Tim Tebow sense; Dak is a quarterback before he is a runner always...and has been since about halfway through his college career. Dak is more of a scrambler in the Steve Young sense.
If you mean Steve Young in his early days, I disagree. If you mean Steve Young in his later days when he learned to hang in the pocket and run as a last resort, I agree.
What makes Dak dangerous is that he will go through his reads and then run if necessary, or the play will be read option, and Dak will read the play accordingly and take off if necessary.
The problem RGIII had was that he was a one-read throw quarterback, and if the receiver weren't open, he would run. Defenses knew what he was going to do and would punish him because of his slight frame.
Dak's not going to do that, and if he runs he has the body to take the pounding but the smarts (unlike RGIII) to get his behind down or out of bounds and not take the punishment.
The quarterback I would best compare Dak to in terms of scrambling (not passing accuracy) is McNabb. McNabb tried to hang in the pocket too but ran when necessary. I think Russell Wilson runs a bit too much, even though he is a good passer. I think RW runs more than Dak does. I would compare Dak to Favre, but Favre was too reckless with his running style, and I don't see Dak that way.