Maybe, but the walkie talkie app only works on the Apple Watch, and if you’re not wearing it the function doesn’t work. They will get a notification you are unavailable.
Like this, it’s pretty impossible to miss your partners voice coming through your wrist. Then you can just quickly lift and tap and hold to respond back.
I’m not going to argue if it’s faster or better or whatever, only that it’s pretty convenient to have the option, and it’s always nice to hear my wife’s voice instead of a sterile txt.