Good points by Summicron1.
The main issue with the film transport isn't so much the film flatness as it is loosely wound uptake spools. I've had many rolls edge fogged because of it, especially if I don't shoot all the frames in rapid sequence. I talked to the maker of the camera about this, and got the advice to change the tension of the springs, and after trying eight or ten different settings, I gave up with no improvement.
Regarding the camera movement, I agree with poster above that during longer exposures it isn't much of a concern. But when shooting in broad daylight it becomes an entirely different thing. We're talking maybe 1/2 to 2 seconds, in which case a slight shake could make a big difference. Either way, the spring loaded shutter release helps facilitate shorter exposures brilliantly, and must at least be considered.