No, I haven't bothered. The reality is that when it is dark i turn on the regular light (the Magic Shine Clone). Once that light is on I cant even see the dynamo lights output.

The reality is that it adds nothing. I have to look down at it to even see if it is on (it is mounted above the fender). It is so dim that if there is much light out I have to put my hand in front of it and look at my palm to see if it is on. As I often describe it, it is a minimum legal light.

Some time soon I will take pictures of the two lights on the road so you can see the difference. The trouble is that dynamo lights are hard to get good pictures of.