In reply to wolfbane:
I went over Helvellyn, Nethermost, and Dollywagon Pike from Wythburn today. It was tough going above 600m, with deep snow covering paths and making navigation difficult. There was also a strong wind and dense clag adding to the fun.
I met a few folk, at the summit shelter, who had ascended Striding Edge. I wouldn't have fancied it myself, in the conditions... I met the same folk again, shortly after they'd left me, and failed to locate Swirral Edge due to concerns about the cornice conditions.
... It's currently pelting it down with rain, here in Ambleside, so it's anybody's guess what tomorrow will bring.