: The contour is 3" deep so you get a lot of support.
: Combined with good abs and posture you dont really press much
: against the back band.

It was a revelation to me when I paddled my instructor's (Shawna Franklin) NDK Romany recently. The NDK glass seat has a sloping back about 6" (?) long, and that's plenty of support if you have good posture. The backband (which NDK supplies stock) had been removed completely. When my wife bought a Romany we removed the backband and it works fine. Now, if I 'feel' the seat back/backband, it's usually a warning to 'STOP SLOUCHING'. ;-)

Removing the backband makes sliding into the boat a lot easier as well - I often found myself sitting on the backband when practicing re-entries, etc.