Yes, as long as the person's blood alcohol concentration is over the legal limit, we would go with the alcohol impaired driving charge.
The only way we wouldn't is if the blood alcohol level is either right at the 0.08 or 80 milligrams percent, and that's just because the courts have a hard time accepting 80 as the actual number for charging, or if the end issue was so grossly inconsistent with the blood alcohol concentration.