I've collected my fair share of boxes of holsters over the years.
This is my 25th year in L/E, and I've had a chance to try a number of different holsters during my plainclothes assignment of the last several years, as well as for off-duty.
I have a fair sampling of synthetic 'plastic' holsters from different makers. They have their advantages/disadvantages, as well as their strong/weak points. All of them.
I had a Blade-Tech paddle fall about a foot and a half to the ground one day, and the holster broke (vertically) along the entire front of the holster body. It was one of the older 1-piece, folded paddle holsters. I'm told the newer ones are stronger. I still have a number of the older ones for different guns. The Blade-tech injection holster I picked up for my G26/27 is nicely done, carries higher on the beltline for a slight concealment advantage with some cover garments, and it doesn't stick outward as far as the Fobus paddle holster I have for the same pistols.
I've bought at least 3 Fobus paddle holsters. Two of them have annoyingly strong retention, and the third one is rather weakly tensioned.
The Fobus holsters, and paddle/holster connection, are held together with rather small diameter rivets in somewhat soft plastic. I bear this in mind when I wear one.
The Blackhawk holster I bought is only for range use. It lacks the button lock (deliberately so). When I bought it the clerk at the police supply store told me that some of their customers had reported the paddles breaking off the back of the holsters, but that if I called the company they had a new, improved paddle fixture they could send me. I haven't called yet. It's only a range holster, and I try to avoid gymnastics as part of my planned range activities.
When I really want the best compromise and combination of holster attributes ... security, comfort, speed of presentation, retention & durability, to list a few ... I use a well-made leather holster from a maker I trust.
Synthetic holsters have come a long way, granted. They have their uses.
When it comes to carrying a handgun for my plainclothes duties, though, I returned to leather a while back. I'll still use one of my many synthetic holsters for 'casual' off-duty activities, when I don't 'expect' to encounter an armed suspect, and in a situation which may involve physically strenuous activities. Some of my activities prompt me to use a different type of holster, though.
Just a while back my partner was easing down into his desk chair, while wearing a 'name brand' plastic holster ... and the arm of his chair promptly lifted the pistol and caused it to pop right out of the holster, to fall onto the floor.
BTW, I gave up trying to 'convince' anyone that their holster preferences were less-than-ideal. L/E may have to comply with agency policies and restrictions when it comes to carry methods and specific holsters, at least for on-duty holsters. I'll offer an opinion, backed up with any relevent personal experiences and/or observations, but if someone wants to choose a holster that I personally wouldn't choose? Hey, I don't have to carry it, now, do I?
As with many other things ... Personal risk assessment and informed choice, coupled with potential individual responsibility for the choice.
The one thing all of my holsters have in common? I use frequently use them on the range so I remain proficient with them, and I additionally spend some time practicing with them with EMPTY weapons, using various concealment garments.
The 'best' holster in the world won't help you if you can't safely, properly and effectively employ & use it ...