The G7 pairs directly with an Apple Watch and acts as the primary sync device. Unlike the G6, you don’t get null readings displaying on the watch until you open the app. I have the dexcom widget on my Apple Watch series 10 with a G7 paired with direct to watch and it always displays the current reading
That's great to hear that direct-to-watch pairing leads to a reliable reading. That's a big improvement over where things were a year ago. I am surprised that the watch becomes the primary sync device instead of the phone, but maybe that's not actually a problem in most situations.
I wore the G7 briefly, but switched back to the G6 because the long-awaited iOS integration for my pump (Omnipod) only supports the G6 at this time. (otherwise I have to carry around a separate device, which is essentially a dumbed down Android phone)