The added height, has been my aversion to a Pedaltrain Pro or Trailer Trash's ATA case offerings. I have my SUV's loading down to a Jenga-like science and can fit all of our band's gear (sans drums) in my car. The added height of some of these cases, while much nicer looking, kind of lose my interest.
Two inches... that is precision right there. Props.
I emailed Rooster, he told me that the ATA case for the Flattrash series would have 5-6" of clearance inside. Sounds like it may be a different case than the Pro series, Chase.