Which way would you go at about 5am in a six wheeler.
What load, what weight?
Snake Pass and A628 are a bit bendy and up and down so an underpowered wagon running max weight isn’t going to be much fun.
When it is seriously windy and snowy/icy I reckon its worth the extra going the motorway route.
This time of year,mway. Black ice on the old road may be only one of your probs. you tipping @ Sheffield so you will be heavy on the front, no good for traction or the bends. IMO