I bought one for my Officer's Model. Not bad, though I was not impressed. In order to hold the gun really secure, the tab needs to be bent so that it contacts the slide....bad JuJu.
In it's factory configuration, it does keep the weapon from sliding down the pant leg, but hardly secures it for activity. All in all, I don't find it to be a real advantage over normal Mexican Carry.
YMMV.
Rich