I'm very surprised by how subtle it is. When I'm sitting watching TV, it's fine, feels like a nice tap on the wrist, as advertised. But when I'm out walking, or doing almost anything that involves moving, they are VERY easy to miss. I tried out some navigation today, and it wasn't a particularly good experience. Apple say you will get different tap patterns to indicate a left or right turn, but it's hard to distinguish anything at all really when you are walking. You can feel something is happening, kind of, but certainly not identify any kind of pattern. How are you finding it?