To me, this just feels like another jump on the bandwagon. I have an Echo and, while it was awesome at first, with all the skills and everything it feels less amazing than it did when I first got it. Now, I feel like it mishears us all the time, it doesn't give the answers we'd normally get unless we say things in a very specific way, and all the cool tricks ("Who is the mother of dragons?") are just gimmicks now.
Unless Apple can actually make their version useful and able to understand questions that aren't formed in "robot" as the language, I don't see the point of this.