Pincer is really quite good at landing the midranks kills, moreso than cranial in many cases. Sure, at hero mace gives you more tactical options in general, but getting 3 attacks and 2 rounds of lag to initiate combat is brutal against people who can't handle you. And that's the point of racking up midlevel kills, killing people before they even have a chance.

There's also the very rare case where disembowel is an added option against really well prepped scions who stick around at 400 hp in the writhing range