Spearhead at arms should be updated. Costs 2DP, locks you into forgepact (and that also kinda sucks)

With spearhead, you can't take outriders

you can take

• Dominus Foebreakers
• Questor Forgepact

But why would you take Dominus with spearhead, as it doesn't give any bondsman buff? (note your bondsman affects 3 armigers, so you lose 3 buffs if you take dominus)

for forgepact - RT entourage and voidsmen can do the same/similar (except repairing).

So why is there "only one way" how to play spearhead?