I'm not really arguing for it or against it, i'm just curious about how much this technology will actaully catch on.

The cable for the RD on my Trek runs through the downtube and the chainstay, with black-on-black it's almost invisible. If the lack of cables is the only benefit of wireless shifting over conventional technologies, I couldn't see myself investing when i'm already halfway there. (I'm specifically referring to wireless shifting, not electronic shifting in general.)