Initial Impressions Pocket Holsters-Nemesis & Pocket Change
(I'm not aware that Chief Mika makes a pocket holster that will fit the CW9. I have one for the 442 and I'm quite happy with it.)
My opinion is that the Kahr CW9 is suitable, not ideal, for pocket carry in a De Santis Nemesis or the Bianchi Pocket Change holsters designed for the K9. But the gun 'works' even better for pocket carry, especially in dress pants or nice slacks where pockets seem to be deeper. But it will fit in most jeans pockets as well.
New out of the box - Nemesis as better, right now, because I find it easier to make the draw with it. The Pocket Change is more difficult on the draw, but okay; it may take some break-in and practice to make the draw cleanly. Also, the butt of the gun sits slightly lower in my pocket with the Nemesis, and it's smaller than the Pocket Change. Both pocket holsters are of equal quality in materials.
In any event, suitability depends upon the size and cut of pants and pockets.
If you're concerned about any printing (not bad with either one IMO) or sagging due to the weight of the gun, someone mentioned about putting a not-too-heavily stuffed #10 envelope or whatever in the pocket. This seems to work pretty well.
The empty weight of my CW9 with magazine is only 18.5 oz. Stoked with 8 rounds of Fed P9HST2 it weighs only 22.4 oz, which, IIRC, is less than a S&W 640 EMPTY. Moreover, fully loaded it weighs exactly the same as a Bersa Thunder .380 fully loaded. The Bersa's smaller, though. But other things being equal, I'd prefer to carry 9mm +P over .380, wouldn't you?
I'd recommend pocket carry with the DeSantis Nemesis over the Pocket Change.