I don't like stuff on my spokes, but that's just me.
The huge majority of headlights on the market today are very poor at side illumination, not sure why that is when the fix is so easy. This is one of the reasons I like the Philips Saferide, because from the side that glowing ring effect is something that other lights don't have...BUT, that glow isn't real bright, but still it's the only light I've seen on the road that has any sort of side illumination.
I've even written Cygolite about the desires of most cyclists to have a headlight with bright side illumination about 3 or 4 years ago and nothing from them in any sort of change, just a BS E-mail letter saying they appreciate my idea and would look into it..huh huh. I can't imagine the lighting industry being so ignorant to the demands of cyclists, but they are, this problem with side illumination has been around for a long time, it isn't some recent sudden interest. The same is true with tail lights too, most have very little if any side illumination which is why I like the L & M Vis180; but the Cateye LD600 excels in that area over any light on the market if the light is mounted vertically, but rearward that light is lacking by today's standards.