I've played in every hole, to every kind of audience you can imagine, drunks, punks, Hells Angels etc, with fights going on, spitting, etc (not EVERY gig I hasten to add) over the years, and during that time I've used, Overwaters, Shukers, Musicmans, Laklands etc etc, and never once has anyone ever touched any of my gear.
I can understand your worry, but there's really no need. Basses are made to play. get in there and have fun is my advice.