[Edi]

Probably not, Endo. Awe is a passive ability, i.e. on all the time. Halt Demon is an active ability, meaning you actually have to hit something with an antidemon weapon and then they get a MR roll to resist.

I think there was a weapon effect called Halt Sacred but it was only used for the weapons of some late game Lanka blood summons. The sacredawe thing, which is presumably a halt sacred but works like awe, is a completely new ability.