Now that it is getting light enough to see, I popped out back and all my shrubs are completely encased in ice. I snapped off a couple twigs from one of my lilacs and measured 0.1" accretion.
Temp is now hovering between 32/33 with dp 32, and there is dripping. But everything that is a colder untreated surface (including trees, shrubs, grassy areas) looks to be coated in ice (including the open grassy areas that may have had some sleet embedded). The cars are encased in ice and I have icicle drips hanging off my car's side mirrors.
What an eventful "nothing burger non event".