I used a bug eye mirror on my motorcycle helmets for years. Last week I moved one over to my bicycle helmet. I was used to them so it was no big thing to get used to. What I did notice is that it is really nice to turn my head a few degrees to see everything behind me. It actually makes my ride more pleasurable as I don't have to turn around so often to look as was my habit. I am also still nursing neck and head injuries from being hit and I don't have the same range of motion that I used to. My swivel is broken...