He's certainly usable in higher level adventures. For example, in MCC he does loads of damage on any camp without first strikers, often enough to save 120-130 sac bows. But even on the Foot of the Mountain, the camp with 100 frost ibex and 50 frost foxes, with 12ms (to absorb first strike damage) he'll take out all 50 foxes and a few ibex. The same camp on evil_j's guide required a mma with 235c and then up to 8m lost with boris' attack.