Well, the weather was quite bad in the end, so I decided that I didn't want to be responsible for a big group on a hill I didn't know in a cloud, so we walked from Strontian to Ardgour along Glen Gour. It's a lovely long yomp with nice scenery that's very straightforward, and some of the rocks in Glen Gour are amazingly stripy!
Later in the week I was going to walk up something, but given the large amount of snow I went skiing instead.
Thanks for all the advice! I am now very keen to get back up there and actually bag Garbh Bheinn!