Tile Backsplash with granite

Hi,

I am having a granite countertop installed.  Originally I was going to have a 5" granite backsplash.  I have decided to have a tile backsplash on the entire space between the top and bottom cabinets, so I don't think I need the granite backsplash at all.  My husband feels we need the granite backsplash and just install the tile above it.  He feels this will protect the wallboard from water better than the seam of granite and tile.  The backsplash is itemized on the estimate for $659.00.  Any suggestions?

Marcie