It might be fast but unless it has a global shutter look out for distortion in moving subjects.
You are exactly correct, it can be an issue with electronic shutters. The new Olympus em1 mark 2 that was introduced at photokina claims 60 shots per second with the e shutter.
The entire sensor is exposed at the same instant instead of progressively from one side to the other. This can be digital or mechanical. A linear shutter exposes a bit at a time and the moving object image moves across the sensor as it is being exposed and is distorted.