Just don't plan on shooting flashing lights, cop cars, concerts, etc.
Cop cars? That's news to me. I've been on three outings with the police in which I've had to film flashing lights and not had one rolling shutter problem with the EX1. With all the talk of this online I expected to have to fix a few frames but thankfully I didn't have to.
Perhaps people aren't using the correct shutter speed? Or perhaps all EX1's are not created equal? This is shooting at 1080p 25fps, shutter 1/50.