For my Mace saber I put a small piece of chrome tape right in front of the on/off switch, flush with the switch while it is off. That way when it is on, the bottom of the switch snags the chrome tape just slightly giving the switch a little more resistence. The tape is not noticeable and does make powering the saber off require a little more effort then what it originally had.
The Mace saber looks great while spinning, but it is heavy and the size of the hilt makes it clumsy.