The thing is that I got about 3 different answers to the same question. And every person that says User X gave a good answer goes on to state something completely different.
The answers so far:
1) It takes time to test gear because the risk is greater i.e. in competition you lose a match in SD you lose your life.
2) Even elite units be it police or military have to contend with logistics.
3) The idea was good but the execution was poor, the technology just wasn't there yet.
4) There were tests but whether something was implemented or not wasn't discussed on an open forum.
So which one is it?