These are two different things: yes, the gimbel will be better in performance, but you cannot compare the mobility the internal ibis gives you. You just through the camra in the bag, not carrying anything more and still able to get some beautiful movements.
Well, it is quiet early with this camera, first sample show better colours than Sony - especially skin tones. You have everything you need for one man operation - like headphones out, full flipped touch screen, not having to worry about rolling shutter etc. That is a good start point.