Not entirely useless (Score 1)

As it stands, most of the displays for Dexcom data on Android watches are either third party (xDrip) or hacks (WearableWidgets + Nightwatch). xDrip works reasonably well if you're the T1D...if you're following the T1D (as I and my wife do ours), not so much...I use the WearableWidgets + Nightwatch hack, which stops working every so often.

If I can bridge Dexcom's Share API to FitBit's data so "manual" becomes a script that pulls data from Dexcom Share and pushes it to FitBit, and they have apps that support the display, I'll consider that a win and probably buy one.