Whoa, gotta hard disagree on that one. Clients might not SAY the word "smoothness," but they absolutely feel it. A rough edge catches on their clothes or their own skin, and then they think the job was bad. It's like that old haircut story, a snag is a snag and they notice. That final smooth finish is what makes it feel professional and done right.
Funny story, I once thought a quicker file pass was saving time until a regular pointed out the snags on her sweater. Turns out I was basically giving hooves a bad haircut. Had to eat humble pie and slow down for the finer grit. Now I check edges like I'm looking for splinters in a toothpick.