Sarge,
I know you specifically asked about a kahr, but...
I have a VM2 for my HK P7 M8 and it is incredible.
That is a small but heavy gun. Your Kahr is lighter, so I can't imagine it being any less effective.
The VM2 is finely crafted. The attention to detail is evident.
Since the belt loops are on either side of the main body of the rig, the holster is very secure and the weight is evenly distributed. The rig is as thin as possible since the belt loops aren't located directly on top of the holster (like a Summer Special).
My P7 SNAPS into place. So yourf gun will be secure.
It rides best on a 1.5" belt, though I think you can order other size loops.
The ONLY thing I *might* change about this holster would be the outside finish. I like "rough side out" - but that's just my preference.
I have a Summer Special II for my Kimber CDP Pro. It too is an incredible piece of work. I chose it over the Exec Companion because it has the rough side out and because it has the smallest surface area (I'm a little guy). It's also a bit cheaper IIRC.
Waiting for the holsters is frustrating, but well worth it.
If you can't wait, I can vouch for Lightning Arms as an excellent reseller who stocks a lot of holsters - at a premium.
Good Luck.
Edited to say:
I suppose I didn't answer your main question directly: YES, they are extremely comfortable. For my money, they are the best in the business.