Originally Posted by
Saint-Just
I am somewhat confused by the local standards of describing non-SRD material, but that feat is, to my knowledge, equvalent to the half of the proposed feat plus something else, not to the proposed feat plus something else.
Honor Bound is not even close. Most of the failed saves would not result in breaking the honor code. Depending on the interpretation it may apply to something that completely incapacitates you (including SoD) if you fighting to fulfill the promise, but it definitely does not apply to something which merely inflicts hp damage, attribute damage or gives you -X to Y rolls.