Welcome to the forum Gonszo,
I have a Do Santis Pocket holster, as shown in the "Gallery" in the black menu bar at the top. In fact I have 5 of them now. I keep ordering them because IMHO they are the best and very comfortable I'v used. They do the opposite of all the problems you are having. I have them for three different guns. Don't give up pocket carry until you try one of these. I buy extras whenever I see one on sale ($14 to $20) and keep them in the car or wherever I might neen one. If I'm storing for a short time I'll grab one to protect it while I'm not using.
If you open up the "Type of Holsters" you see a picture of three. the one on the left I can't remember the name is Velcro'd to provide a better "no Print" from your pocket. I find myself separating them and using just the folded holster. I don't like having to squeeze my fingers between the flap and the att'd holster. It also works great.
Really give them a try before you give up. I like pocket carry quit a bit just under a tee shirt. I buy Levi's because the pocket is much bigger than others and completely covers the CM9 and holster.
Note: on my CM Do Santis it was a little tight at the trigger guard so I removed the thread at the trigger guard and stitched in a new location allowing the gun to sit fit better which also allowed it to go further in to the bottom of the holster at the nuzzle. Of course it went deeper in the the pants pocket which helped conceal better.
Hope this helps
I bought this holster thinking it would be good for ccw.The holster itself is well made but was very tight when I first got it.I had to wrap my cm9 in a t-shirt and stuff it in a little at a time.The holster came out of my pants several times even though I was wearing a belt when drawing.Thickness with cm9 is aprox 1.6 inches as well so you loose the conceal factor that you are looking for.Im going to try the non tuckable and see if it is better for me.This feels like im packing a glock 21!THe extra flap for the tuckable should attach with velcro so it can be taken off for the time you don't want to tuck. I hope this helps anybody looking at this holster.Glock 17 is in comparison pic with cm9..