I picked one up on Saturday. Installed it and I gotta say, I really like it. Our main reason for getting one, was we just wanted to be able to see if anyone comes up to our door or in our yard throughout the day when we aren't there or when the wife is at home by herself with our girl and someone comes knocking on the door, I will be alerted and can see what is going on. Also have an echo dot my wife got for Christmas last year that has never even been used and hooked it up to use as our chime (since we don't have a hardwired doorbell) and not have to purchase anything extra to make it work the way we need it to.
I know there is a big threat with stuff being hacked and I have read stories with cameras and even baby monitors being hacked and big brother being able to hear you, but I figure I already have a smart phone, laptop, ipad, etc, so I figure if they wanna hear me or see me, they have plenty of access points already.