"Worth it" is up to you. Look at the gimbal shots on YouTube & judge for yourself. You've got to carry it with you. It's not like you can just slip it in your pocket like your phone. If I had a gimbal I'd play with it a bit, but I never would want to carry it around. I bet a lot of gimbal owners buy it and use it for a while and enjoy the smooth views— then lose interest in it and it ends up in a drawer.
My conclusion was: get a real action camera instead. Get a GoPro.