Two things happen in almost every storm here.
1. CAD over performs
2. Warm nose over performs
Same thing happened here last storm. Got way less snow (almost none) than modeled and much more ice than modeled, albeit just shy of being enough to cause major issues luckily, but it was never really modeled as a big ice storm for me.
Would not be surprised at all to see the CAD over perform again and there be more ice. Question is how much ice though.