Curious. I wonder what the reasoning was? Hopefully it wasn't "it's not needed because the device comes with a perfectly good earbuds/mike combo that works". Because that one works only for those with ears of a specific physical design (intelligent or other). Some of us have ears without that flip that holds the earbud in. So we have to use headsets. And they don't normally come with those combo jacks.

(I got my splitter already, as mentioned earlier in the thread).