I drove the car today. Here's the final word on the wink mirror.
1. Forward visibility is compromised. It takes getting used to. I have to look between the mirror and the roof to see stoplights. This isn't a deal breaker, but it's close.
2. Vibration. It does vibrate, but I found if you twist the mirror along its length it doesn't vibrate as much. I.E. locking it down with some tension reduces the free play and dampens the vibrations.
3. Rearward visibility is AWESOME! Can't beat it. No distortion and very wide range.
Final Tally: I'll keep it in for awhile, but I wouldn't recommend it to everybody. It's not bad. It's not great. Some people will like it, I think most people will dislike it. Actually, come to think of it, the shorter you are the more you'll like it because all the visibility issues are because of height.