Anything smaller than a phone implies even more cloud bound. It might be "ambient", it might be "contextual", but it sure won't be "personal". As in my device,

Anything smaller than a phone implies even more cloud bound. It might be "ambient", it might be "contextual", but it sure won't be "personal". As in my device, my data, my decisions. "Personalized", sure, but that's merely a distraction from the fact that you are operating a thin client with zero control. A browser allows you to scroll through offerings, a voice interface will send you right to the highest bidder.