There used to be a short video of a guy wearing a cheap Fobus holster. Another guy comes up behind him and simply pops the gun out of the holster as the holster breaks apart at the rivets.
But that's not in the same league as a top of the line Kydex holster. The cheap Fobus holsters will work to carry a gun (and rattle), but they're not tough. They're popular because of price. The name isn't printed on it, but I'd be certain the plastic holster included with my Springfield XD/M 4.5 is Fobus, even if I couldn't see the "made in Israel" marking.
I'm a bit of a traditionalist and I like leather, but I'm most interested in what works, and will continue to work reliably for a long time. I forget who first said "never trust your life to a holster that costs less than two boxes of ammo," but he had a point.
“The police of a State should never be stronger or better armed than the citizenry. An armed citizenry, willing to fight is the foundation of civil freedom.” Heinlein