>>95949790
Switched at birth, anon :P
I've always imagined the Siege Breaker should be the one who gets to equip a Heavy weapon, as to be able to be attached to a Heavy Support Squad and do more than just waive his hammer around. Didn't help Lascannons got natural Sunder for some reason, so there was nothing he could give them.

And also that the Armistos was the armoury guy, so he could unlock phosphex and rad. And that rites requiring a Siege Breaker could also accept an Armistos instead