I tried to respond to this. Must have gotten cyber-flushed.
I have two Blockers. A DA-2 OWB pancake holster and a complete LFI system. The DA-2 is very comfortable but hard to conceal; what do you expect from an OWB? The LFI works very well and has several things to recommend it. The velcro makes it very easy to achieve a comfortable and concealable position, rake and depth. Its goes on and off fast without unthreading the belt, kind of like a paddle.
The holsters will not win any beauty contests but are well made, durable, and reasonable priced.