I saw an advertisement for those .
The 2 issues I had were ;
1, It claimed to "secure" the pistol in place , I didn't see any kind of retaining strap so I don't know how it would do that.
2, It looked like it would take attention to fit the muzzle over the rod to reholster, taking your attention off potential further threats. There was a reason swordsmen learned to sheath their blade with out looking at it.