If you're not a professional athlete who is getting tested why would you take it? If you are a pro athlete and they now know about it and can test for it why would you take it? I don't really understand why you would want it, you'd end up paying a lot more for a steroid that was designed to evade detection which might not be as effective as the stuff you could get through your normal channels.
The only reason pro and olympic athletes were taking this was because it was previously undectable in tests, now that it's detectable they won't still take it. It's not necessarily more effective than regular Tren.