In reply to Grahame N:
Also in the Dodds list are two other nearby tottering towers, Needle Rock, given E1, reputedly climbed by Patey and Bonington (although Patey's account implies they didn't actually reach the top) and Coire Faoin Stack (no recorded ascent, I've been to the notch about 20 feet below the top and it didn't look totally desperate above, just made of biscuit, 5a maybe?)