I noticed that one could get some significant height off of the left rock near the red beam - swing off the beam from underneath, then pull the hammer down through the peak of the rock, pogo-ing up and very slightly to the right. I managed to get enough traction on the slope above to pull me towards the little outcrop, and it's easy from there. I'm not sure if this method could be optimized to be faster than a good chimney run or not - obviously, I'm very slow.

I guess the key is whether or not the inwards pull once you launch high enough can be executed consistently at full speed without losing traction. If it can, it might be viable.