The title says it all.

Not very.

I've climbed a fair amount at both places, and I've never found a 60m rope to be inadequate.

North Clear has some routes where a 70m would be nice. Those are some of the best routes as well out there.

I have a 70 and have never needed the extra 10 meters at Twall or obed. However there are other places to climb other than Twall and obed that make owning a 70m worthwhile.

Thanks!

I own a 70, just didnt know if it was worthwhile bringing it down.

There are a lot of 100 ft climbs at T wall. Tie a know in the end of your 60!