Shadowcaster and Racial Darkvision

[Icyshadow]

I have a good concept and build for a Shadowcaster Conjurer/Infernal Binder (both can be found in the SRD if you don't know what I am talking about) in case my current character dies in an on-going campaign but, I noticed just one problem. Since the character I want to play is a Tiefling, she already has Darkvision, so the 5th-level ability from the Shadowcaster archetype would basically be useless. Should I just live with the wasted feat, or could I ask the DM if he'd houserule it so that I get the normal Wizard bonus feat instead, or an increase to the distance of my Darkvision instead?

[WhipShire]

Darkvision (Ex)

At 2nd level, a shadowdancer gains darkvision out to a range of 60 feet. If she already has darkvision, the range increases by 30 feet.

Works for Shadow Dancer so it should be an easy sell.

[Icyshadow]

Even though a feat would be far more convenient...

[HappyDaze]

RAW is that it's a waste - you gain nothing. Not really all that unusual to have this happen when racial features are overlapped. I've noticed it most with racial resistances that get overwritten by class-based resistances.