Several years back a "Major Sanctioning Body" required that race car chassis be built using a certain grade of material. Within a couple years virtually every car in competition was built using that mandatory material. Well after some disastrous accidents involving severe wrecks and chassis breakage do to using that material, someone final took an engineering look at what was going on. The finding was simple, the mandated material grade had been forbidden in aviation for the past 70 years are more, because it was likely to crack or break. The material had a very good tensile strength, but very poor fatigue properties.
I am a safety "nut", so I am not trying to be contrary to safety requirements, just the opposite, however I do question when folks start to demand you do things that make no since whatsoever in engineering terms.
So back to the safety wire; If the axle is design to be held in place with the pinch bolts, then safety wiring them properly to stay tight should be what is require. If you are required to start poking holes in an engineered fork tube, then you should take a close look at just what effect that has on the area you poke a hole in.
Safety is your responsibility just as much or more than the tech. inspectors, I'd say more so.
Rouse