In reply to Slioch:
Was up there today and will add more detail and photos later, but essentially there's very little old snow at the top of the headwall. There's a bit of build up on top of this in places, but these sections are easily avoided. Top 50m or so is old scoured icy snow, crampons essential (saw a few folks turning back because they didn't have them) but after that it's fresh powder all the way along the ridge, crampons were off the whole way.
Very little "proper snow" in general on teh Buachaille, lots of new stuff though which hasn't consolidated in any way shape or form!! Stunning day out though