He made the Cubs look BAD today. Which may or may not be saying something, as the Cubs have looked like Dr. Jekyll and Mr. Strikeout for the past couple years. But the broadcasters were comparing him to Mark Prior the way the ball seems to explode the last 20 feet to homeplate. I wouldn't drop an established pitcher for him at this point. And choosing him over Suppan or Chacon is pretty much a toss-up. Any of those 3 pitchers could be the next coming of Nolan Ryan, or perhaps the next coming of Kip Wells, or just the next big washout.
If you have someone like, say, Ted Lilly or John Lackey crowding your bench, it's probably worth picking up Eaton. But who knows, really.