At a subcontractor, the estimator often also writes the proposal and talks to the general contractors. At a small firm, the owner does this work.
The job has two halves. Takeoff finds how much. Pricing finds how much it costs, with labor, material, equipment, overhead and profit.
A good estimator reads the spec as closely as the drawings. Most misses come from something written, not something drawn.
Software can count and sort, but judgment stays with the estimator. Takeoff Tool does not price the job and does not replace the estimator.