If I'm wearing my Apple Watch and looking at something on my iPhone, and want to know the time ("that message just said that thing is at 7:30 - how long is that from now?") I will absolutely glance a degree or two upwards to read the time off the top line of my phone, rather than rotating my wrist 180 degrees (hiding the phone's screen momentarily), to read the time off my Apple Watch. I mean, it’s just so obvious.I still believe they’ll hide the clock if you’re wearing an Apple Watch. I’m mean, it’s just so obvious.
You appear to only be considering the case where the watch is on your wrist, and the phone is in your pocket, and you want to know the time. And despite your admission, I don't think you're mean.