In reply to Kid Spatula:
I've done it twice and not felt the need to abseil, but if you aren't used to granite, or to *hard* scrambling (i.e. a wee bit of easy climbing, unroped), it could be quite daunting. So as I don't know you or who you may be with, I wouldn't want to say it's ok without a rope - it isn't really very hard, but it isn't a place to get gripped or panicky.
I'm not certain of the length, but it might be worth considering that if at least one person there is confident doing a couple of moves of diff or thereabouts on granite, a 30m rope would be plenty to allow them to keep any others safe, before doing it unroped theirself (or after, if going up it).
If that doesn't sound great, just take a 50m half rope and revel in the extra exercise, it's probably good training for something!
Post edited at 22:34