The only time I have seen it is when people want dual colors. I know they make split LED inserts, but this way people get full brightness out of each color. I'm sure doing two of the same color would be brighter, but I don't know what it would be compared to "real" strobes. Also, there is the cost benefit ratio to consider...which I'm not sure what it is in this case. Your money might be better spent on a pair of different lightheads to use to make the area more visible. Either way it is your call.
Let me know if you need some Universal Undercovers if you decide to do this.