In reply to Johnny_Grunwald: I did the aonoch eagach last year (starting at the opposite end to the pub, I think we were heading approx.east-west).
The only "pitch" I can remember is a short easy chimney like thing we went up... Very secure and nowhere to fall even if you did, prob a bit scary to come down if you went the other way...
Otherwise there was nothing worth taking a rope for, a couple of my mates did and they never took it out the bag.
We went for the light approach and had a great day!
Although if the weather's bad, things may have been different!