Having some way to have some early pressure against your opponent is quite awesome, and it should make terrans rethink their openers if this becomes popular, terran will no longer be able to do anything at all and still be completely safe, it should make it a lot more dynamic.
Its similar to a protoss going double gateway against zerg. You do it because some early pressure will limit your opponent's options, because if your opponent is too greedy, you have a chance to outright win, and because if you cant put much pressure, then you dont lose much. Same thing opening with a reaper against toss as terran. You dont do it because you expect it to win you the game. You do it to limit his options, because it doesnt cost you much, and it has the potential to win the game depending on what your opponent did.