Part of me thinks that if Campbell is the #1 offensive lineman on their board, and he's there, just take him. But realistically, if his arms aren't long enough to compete with NFL Edge rushers, and he has to move to guard, when is he useful to the Bears? Without an injury or some other benching, probably not for at least 1 or 2 seasons. That's not an ideal situation for a guy that you picked at #10. If that situation played out, that pick would be highly scrutinized.
At that point, just take Banks or Membou if they have them similarly graded, and they're dead set on taking offensive line. Maybe they could avoid all that and take an Edge if their guy is there. I think with how free agency played out, they do have a bit more flexibility to take their BPA. Hopefully that's what they do.