I have mine down. Personally I think it looks better but it does come with o e drawback. If you are using your bike to commute in traffic I would not recommend it as you are looking down for a second longer than you would if they were mounted up. That can be a problem with some of the drivers that we encounter on a day to day basis. As for visabilaty you will be looking between your thigh and under arm. So if your jacket that you ride with is bulky this could be a problem as well.