Vigilante Shield of blades -- when you already have a shield

[nimrodx]

Hi,

I have a sword and board character vigilante (1st edition)
He has taken shield of blades as a vigilante talent.

I notice that if I don't have the shield equipped, the AC bonus involved in using he talent gets applied to my AC.

However, when I do have a shield in my off hand -- the AC bonus is not applied.

My guess is that the AC bonus from the talent is replacing the AC effect of the shield -- since they are both +2.

This does not seem to be correct, as I cant recal seeing anything indicating that it should work this way.

Can this be fixed, or am I incorrect?

Thanks!