Warpriest and weapon effects

[Night_Shade]

I have a question about the abilities some classes can add to their weapons (currently I beleive that the warpriest and the magus benefit from this).

The warpriest has the ability to add certain enhancements to their sacred weapon. If a weapon you have is not of the type to normally use that enhancement is it not available or would it mean that the power of the faith of the follower will allow it?

Point in case:
Warpriest of Sarenrae using scimitars. At 4th level the warpriest can enhance a weapon with any of the following weapon special abilities: brilliant energy, defending, disruption, flaming, frost, keen, and shock.
In this case disruption states it can only be applied to a "B" type weapon, would that mean I could not add it to the scimitar?
I would think that specific trumps general, but would like others input.

The above situation could apply if the WarPriest's weapon was a mace and the keen (P or S) was attempted to be used.

[Saldiven]

I would assume that you could not add the effect (including adding Keen to a Blunt weapon).

There doesn't seem to be anything in the Warpriest rules for Blessed Weapon that override the:

"A disruption weapon must be a bludgeoning melee weapon."

or

"Only piercing or slashing melee weapons can be keen."

restrictions under the individual weapon enhancement descriptions.

{To my reading, the individual descriptions for Keen and Disrupting are more specific than a rule that mentions enhancement bonuses and a total of 17 different weapon enhancements.}