Though this is an attractive enhancement, I personally would not bother as there are the risks I mentioned earlier.
Most of our streets and homes are pretty well lit so their usefulness especially in town would be marginal.
However, in places like the third world, where much of the pavement (if they exist) and road is littered with all sorts of disgusting waste, I can see the benefit.
But then again can one have too much light on the roadside/pavement at night?