Two-way response/interaction. integrating a sound, buzzer to give feedback of the result of a program initiated by the click....
A smartphone can not be carried at all instance outdoor or active environments, but the Flic can :)!
Using the smartphone for running the app at the side AND signalling a result/response to the three clics of the Flic, could make it usable in a lot of special developments,; sports, timing, measuring, instant feedback on action etc.
I do have an app under development that really would need this :)