I have BW excellence 8.6s. These are one of the few edge rated half ropes. Supposedly they are good for one sharp edge fall, but not two. I am not sure if this is the single rope sharp edge test, or an additional double rope test.
The important consideration is the fall factor. A factor 1.78 fall is a hard fall (factor two is max). I dont think most folks make a habit of taking falls anywhere near this hard on a regular basis. A 20 footer 40 ft up a route is only a factor 0.5 fall by comparison. Unlike the test, real ropes will likely have significant time between falls where the polymer molecules can relax to a less elongated state. In practice ropes should take considerably more falls (even decent whippers) than the test suggests. I would imagine the test is pretty conservative by design.