Like Tree Man, I generally prefer sharp tools. But an over-sharpened drawknife is a recipe for snags, "runners" along the grain line, and ruined staves or boards. My experience bears out Bowyer's Bible advice -- don't over-sharpen a draw knife. I'd say, just get out any nicks in the edge. For the most part you're using the draw for remove bark and softer outer wood, then switch to rasp and scraper or hunting knife for the finer work of tillering. I'm sure you'll get more opinions here. Good luck, dave