Just an update on this
First, finally got gridwars running fullscreen 1920x1280. Awesome, though it does change the nature of the game a bit (lots more space for running around).
Also picked up AtomHex, also by Marc Inciniti.
Very cool game. i wish it had a soundtrack instead of just the sound effects, but, the effects are very well down, graphics are spot on and the game play is very challenging, lots more elements to it than gridwars.
Haven't played with them on the cab yet, but neither seem particularly suited to cabinet play. Not from a controls perspective, but they just don't seem like cab type games.