I would use it but mostly everyone I know uses iPhone. They don't want to download a messaging app when they have iMessage.
Ive tried, but one of my peeves is that there is no way (that I can see) that will tell me which one of my contacts has the app. I don't want to send those stupid Google invite messages to everyone I attempt to reach out to.
If you go to start an incognito chat, it will only list those that have Allo.
It's not an ideal way, but it's a way.
Nope. Opened it today to see if anyone downloaded it without saying anything and nope. Like other people said without SMS support it is useless.