We'll see. I def agree there may be additional freezing rain as temps rise above freezing due to the very cold surface, but even with that I believe it should be a pretty short window. Of course it only takes a very short period of glazing to create huge problems on the road. To me the deep southerly flow with rapid WAA screams a very short duration glaze event. Some areas, particularly further west out this way may already be too warm for the brief glazing.
The 12z NAM solution is interesting, and to be honest I kind of expected the models to trend in that direction over the past few days. So far the globals, including the mighty Euro refuse to adjust southward, so I'm tossing the NAM solutions at this point.