Well, with Bruce's band it was a backup for his #1 Sunburst Strat, but I think that nothing has ever gone wrong with that guitar (at least there are no bootlegs of it...), so probably not.Did he ever use the HSH Jackson superstrat on stage with Bruce's solo band? Or actually ever even with Maiden before it got the signature pickguard? I haven't seen any footage of that, just the few instances it's been spotted (or played) backstage.
With Maiden (pre SBIT, when he recieved the signature pickguard), I think the closest it got to the stage was DOD tour, when #2 Sunburst Strat was actually his main drop D guitar and the Jackson became a backup for #1 Sunburst Strat again. Again, no bootlegs show stage use.