In reply to girlymonkey:
Yes, we did it from the Glen Tanar end, it was an easy cruise all the way and I managed to get the bike as far as the summit cone then walked the last few hundred yards. I'd have done better to leave the bike at the turning circle at the end of the very obvious shooters' road that goes straight up towards the col because beyond that I was just pushing and carrying.
It's fine in MTB shoes with SPDs.