So last week I got in my two crossbreed holsters I ordered. One for my Sigma 40 and the other for my Taurus pt111 mil pro (9mm).
So, I have never carried a gun till getting these in, never used any other type of holster so I can not say that this one is better than anything else out there.
What I can say is that it does seem pretty comfortable but does take a bit of getting used to. One thing I did not expect, being inexperienced, is that there would be a gap behind the holster of my pants and skin. Does that make sense? In other words, behind the holster the pants don't meet skin right away. Understandable but not something I imagined till wearing it. I would assume that would be the case with any IWB.
I also find that I have to be careful holstering the gun and making sure not to push it in too far. I don't know that right handed people would have an issue or not, but being left handed, the magazine eject button sits just barely above the outside upper edge of the kydex holster. Push it in too far and the mag is loose. Draw the gun after that and the mag falls right to the floor. Luckily I figured this out at home very quickly after getting the holster and practice drawing and holstering with it at home. Left me a bit paranoid going out with it, kept wanting to reach back and check the mag. Would not help much with concealment to be doing that though I think.
Seems to retain the gun pretty well, and even if not that seems to be adjustable with a hairdryer, so not too much to worry about there. I feel more comfortable with my shirt tucked in though, as opposed to out, due to the concern about the mag possibly falling out though. For the most part, leaving my shirt tail out is not a problem, but considering I ride a motorcycle alot, I would hate to arrive somewhere and find I dropped a loaded magazine somewhere down the road, so to speak. Having the shirt tail tucked on though would at least provide a safety net in case the mag was to fall out for some reason.
The thing I can say for sure about the holster, even considering my inexperience, is that that it does a pretty good job of concealing a gun, no problem there. My wife and kids could not tell I had it on at all. I also have gone out with it on a few times and did not notice any funny looks. I have noticed though that if I bend far enough the handle will print so that is something to avoid if possible I suppose. I can also experiment with cant and ride height and such if necessary.
Anyways, pretty happy with it so far.