The BBC Weather is giving the following for the Borders:-
Accumulations [of snow] of 2 to 5 cm are expected in places above 150 m, with 10 cm or more over high ground above 300 m. Winds will gust to over 50 mph on coasts and hills, leading to drifting and blizzard conditions on high level routes.
The route tops out at 430m therefore I'm out!