I agree with ateamer on mechanical retention.
Appendix carry with the $12 Uncle Mike's/Blackhawk inside the waistband holster.
Easy for you to draw, absolutely not going to fall out, very comfortable, no printing, and cheap.
The only downside is that it will not stay open if you draw. I say in terms of its role it is superfluous, because all it needs to do is securely and discretely allow you to carry until it is needed. Safe reholstering simply involves taking the holster out of your waistband, and reholster.
Quando Omni Flunkus Moritati