If I thought the P11 was "painful" to shoot, I wouldn't have put all the rounds through it I have over the years. To me, with or without the finger extension, it is quite fun to shoot. Pain? You want pain? Buy a 12 ounce scandium .357 magnum and load it with 180 Buffalo Bore. The 9x19, even in +P, is fun! I'm quite use to heavy magnum revolvers, so maybe I'm just used to it. I've fired .45-70 in a TC Contender. THAT'S pain!
Yeah, the KT is quite accurate and fast after you get used to it. We have these 6" falling plates, resettable, at the range. I like mowing them down with the KT at 25 yards, quite fun. It's about as accurate as any snub .38 I've owned, puts 'em into 3.5" at 25 yards off a rest. That's service gun accuracy in your pocket with near service gun firepower in a service caliber. Knock it all ya want, I carry mine all the time and feel well armed with it. I know one thing, I'm well PRACTICED with it.
First 6 years I owned it, I practiced once a week and usually put a box or two through it. I was shooting IDPA at the time, using a Ruger P95 and later a P85, and bought a Dillon in 9x19 to keep up with my practice. I'd go practice with the Ruger and finish off with the carry. That danged KT is near as accurate as the full sized Ruger and I actually used it in a couple of IDPA shoots just to see how well I'd do. The short sight radius does slow you down in sight acquisition, but the trigger didn't, really, and accuracy opened a few eyes at the range. I shot slightly slower times, but still in the fast sharpshooter range. I had just made expert level at the time. The gun is no slower than a snub .38 which I've been carrying this week and it has a lot more firepower and fits a pocket better, slightly smaller and lighter than my Ultralite.
I don't shoot the gun as much anymore, make it out to the range once a month usually. When I go, I usually shoot .22 and the KT sometimes gets skipped. But, for a while there, I hardly let the barrel cool off on the thing and never a complaint. The gun has not failed me with 115 grain JHPs or my 105 grain cast SWC handloads. Yeah, it's my favorite carry and I really don't GAF what anyone else thinks. I know it works for me.