I can't speak from experience, but webcams of Glen Coe look remarkably green, as did a friend's summit photos from Knoydart today. I can't see Arrochar being any better. The ground is likely to be frozen and slippy by the weekend though, so you may well be wearing crampons at some stage.
I was on Ben Laoigh today. Ground frozen above 800 metres bit vitrtually no snow. Hoarfrost above 900 metres and ground very hard. Odd snow shower so may be a dusting by the weekend.Could see virtually nosnow north of here either.P robably only snow lying high in NE facing corries. Central gully on Laoigh virtually no snow.