I was thinking one could manipulate how far up in the ladder one wants to go, both in terms of rungs and number of ladders. At the end of ETK, you are C&P-ing 5 ladders of 5 rungs for a total of 75 reps. Someone not so interested in the endurance part of this training could terminate the cycle at a lower point (say, 5 ladders of 4 rungs for 50 reps) before upping the weight.
Anyway, just thinking out loud here. Anyone tried this?