Heralds & Concoctions

I am a loss to understand the reasoning behind the constraint that all Herald skills require a "Martial Weapon". Apparently being unarmed, i.e. fighting with one's fists, is not regarded as a "martial" art. What would Bruce Lee say?

So, it is currently impossible to use any Herald while unarmed.

I realized this after blindly attempting to use Herald of Blood with Bleeding Concoction. WTFnope! And yet, this is such a screamingly obvious combination that would definitely be fun to play. I was left scratching my head.

I can see that it would work nicely by equipping an alternate ("martial") weapon set after building up some blood loss on a few mobs with Bleeding Concoction. Once I switch to the armed configuration, the blood loss is displayed and the blood pops happen on death as expected (as long as I don't switch back to unarmed too soon).

The same kind of synergy exists with Herald of Fire and Explosive Concoction, Herald of Lightning and Fulminating Concoction, Herald of Cold and Shattering Concoction, and (obviously) Herald of Plague and Poisonous Concoction.

So many combos begging to be played but, the way it stands, all the Concoction skills are just absurdly crippled. I guess they just became too strong to balance? Now they will be, at best, limited to awkward oddball secondary dps.

I have to ask: why bother having a Concoctions ascendency at all for Pathfinder? It seems like a complete waste of space on the skill tree.