There's just something about the voice. I can't put my finger on it, but it's a little creepy. Maybe it's the music. Maybe it's just too damn cutesy.
This is what happens when you call out for your Huawei Mate S should you lose it and have set up the voice commands. By calling out "Hey (your choice of keyword)" followed by "where are you?" The phone will then vibrate, the flash will pulse and the stock music that will play is what you see here.
Hopefully there's a less creepy option. We haven't got that far yet.