In reply to drmarten:
Well the weather improved and allowed me to get up to Assynt. I emailed the estate and to cut a long story short ended up calling the head stalker who was very pleasant and happy with me parking next to the suspension bridge. When I drove up the glen I parked just before Duchally Lodge (and it's Private Road - No Access sign). I parked in a small parking space on the left of the road where it is still public. I'm not that sure permission was needed but there you go.
I had a great day with cloudy chilly weather clearing to a beautiful sunny day, the south ridge has a granny stopper which is an easy scramble, but the ridge itself is very enjoyable. Stick to paths or tracks if possible, stay off the moors!
(My original plan of straight line over the moor went out the window once I saw the terrain..)
Edit : Andrew - there was snow on the hill, but none on the step, and yes I could see it would be a different proposition under snow.
Post edited at 21:41