In reply to CameronDuff14:
I soloed it in winter many years ago. I’ve also done it multiple times in summer. One set up I used was to set up a via Ferrata with my lead rope so my mate could just move along it. Plenty of places for gear to set up either a lead/climb or ‘rail’ as described.
It’s nervy if covered in ice, but neither difficult nor long. But as Cameron says, it’s Grade II so bear that in mind depending on your experience.