In reply to Dan Bailey - UKHillwalking.com:
It is indeed a good objective for a short day. It is worth noting that is also possible to ascend (or descend) the west side of the burn. There is a newly constructed path that leads from the parking spot to a water intake about halfway up the falls (presumably built by Scottish Water). Above this there is a fainter path up the side of the burn which gives much better views of the upper falls than the path on the east side, and avoids any need for a river crossing when water levels are high.
If you go up this way there is a slightly offbeat variation that crosses the obvious shelf on the E side of the hill - at the far end of this is a shallow rocky stream gully that gives some easy scrambling before steep grass leads towards the SE top.
Another point of interest is that the clean slabs next to the burn are quite a recent feature - they were scoured clean of turf by a dramatic flash flood in August 2014: https://floodforecastingservice.files.wordpress.com/2015/05/berth-storm.png