This is a typical grip used in fencing for foil and epee, made cooler by the voroid effect :P
It's obviously ONLY for decoration, if printed in plastic (too much strenght and pressure on the grip to be used as a metal one). I suggest to use supports but i STRONGLY raccomend not to use tree-support, due to some difficulties for the “cleaning” part.
100% infill is the best for the best result.
Enjoy!