I have no problem carrying an S&W Airwieght or my Ruger SP-101 with 38s. My Ruger is a 357 mag but it's hard to control with that round. I can get much more accurate shots with the 38s. On the other hand, my Ruger Vaquero is much more accurate with the magnum loads.
I have been shooting my Ruger SP101 for long enough that I no longer shoot 38s in it in part because the 38's are harder to clean than the 357's.
The owner and instructor of my CCW course here in Idaho, Ed Santos of Center Target Sports told us he carries a lightweight, Titanium 357 in his pocket as a BUG. He states he shoots full power 357 and does so once a month, 5 shots only because it is a painful gun to shoot. This is a man that is about 6'2" and about 240 lbs. He is retired military and part time LEO and expert firearms instructor and personal bodyguard. The lightweight Titanium 357's are a beast I don't want to contend with. The Ruger SP101 is 12-14 oz heavier but the same size so you can pocket carry them and I have done so many, many times.
The Ruger SP101 is small enough but also heavy enough to be comfortable shooting. It seemed subjectively to me to be about the same felt recoil as my Ruger SuperRedhawk in 44 magnum with a 7.5 inch barrel. That gun weighed 54 oz's and was very manageable. If you can shoot a 44 magnum, the Ruger SP101 with full 357's is not a bad gun at all to shoot.
The adage is shoot the biggest caliber you can comfortably and reliably shoot. I find my Ruger SP101 very easy to shoot with 357's. My son on the other hand has only a limited amount of experience shooting handguns and he shot my Ruger GP100 with full 357's and only shot one round before he handed it back to me. So, it is experience and learned ability on what you carry. But I do call my SP101 a little hand canon. It packs a pretty good wallop, but with experience, easy to control. It is after all a "belly" gun meant for short range self defense against all 2 and 4 legged predators.
So, I can't agree that you should ONLY use a 38 in these type of guns. Sorry, I don't like cleaning the cylinder after shooting the 38's any more. And the full power 357's are not hard to shoot after you get experience with them.
Now, a couple more years to this old decrepit body and I might stop shooting 357's in it and go to the Buffalo Bore 38 sp offerings which are quite good. But for now, my little hand canon is my EDC in my own home because it is so lightweight and I have other guns within close reach should, God forbid, I need more. But yes, it does give your hand a pretty good thump but still not as much as my 44 magnum was, but close.