Once speaking to a voice assistant is as accurate as talking to a human on the phone, why not. It'll look like/be as anti-social as a normal phone call. Fine on the street, probably not in a crowded train or in the office.

Where it gets annoying currently is repeating OK Google/Alexa/Siri five times, then repeating what you want the damn thing to do another four times, each time a bit louder.