Sitting behind Romo, nobody ever truly seeing him, Brady Quinn, would be worth a top 10 pick today, regardless of the reality of his ability. We very easily could have gotten him for a 22 at the time and come out of it with a top 10 this year. Combined with the pick we already have, that could realistically translate into a top 3 pick this upcoming draft or 2 top 10 picks.
And in today's NFL with the likes of Romo, Rodgers and a handful of other QBs, the prospect of someone being "groomed" the right way is a very in flavor. Hell, a team could even mislead the rest of the league for a couple years on the progress, and take advantage of this. That's why I say even a Quinn could be worth something, even though in reality he's not. But...people only know that because he was thrown to the wolves so quickly in Cleveland.
Anyway, if someone is sitting there and is clearly BPA, I say take him. Especially at this position, where reality is often construed.