Baltimore will definitely struggle more than say my area to changeover (that’s not just a seasonal theme… it’s an always theme) but all it will take is a few hours of heavy snow to verify the advisory on grassy and colder surfaces - even downtown. Low elevations west and southwest of here have been changing over quickly. Ground reports on twitter have pretty much uniformly been that a clean rain to snow transition is occurring after temps crash rapidly. You could be right, but I don’t think Baltimore or DC struggle all that hard given the strength of the front.
IMO, based on the radar, the 95 corridor will likely make up for some of the time lost to temps with heavier precip returns once things do changeover.