DEPRECATED
I've stopped using Grid and will not be updating this addon anymore. Instead I'm using the standard raid frames together with the following addons:
Blizzard Raid Frame - Indicators
Blizzard Raid Frame - Raid Icons
It gives me all the functionality I need with less hassle.
If you're an addon author and want to take over this project, send me a pm.

This addon will fetch the list of MT's from either oRA2 or Blizzards tank list (and also oRA3 tank lists since it uses the Blizzard tank list). It contains layouts for 10/25/40 man raids (with or without pets) where the MT's are listed in a separate column, in addition to the normal layout.

After installing this addon, make sure you enter the grid config and select one of the new layouts.

Type "/grid config"
Click "Layout"
Under "10 player raid layout" and "25 player raid layout" (and others if you want) select the layout you want.

Based on GridoRA2Layouts by SquishemHard (aka LiquidEnforcer) and GridStatusMTs by Kunda