I never noticed any more problems with stainless steel than carbon steel, however the only stainless revolver that I have run long term was a Md. 66 That was used as a PPC gun and was used almost exclusively with wad cutters. I have seen stainless steel guns gall when run dry(that is small amounts of metal would pull out leaving tiny pits.) When properly lubed they run ok. the worst I have seen for this was a 1911 stainless frame with a carbon steel slide that had at least 50 rds through it without ever being lubed.
I have never had my hands on a stainless K frame that was shot a lot with full .357 loads. I shot 3 or four thousand rds of .357 through a Md 686 and never noticed any excessive wear. As to 125 grain loads in .357, I never used then for anything, I thought that was two light. Our issue rd in .357 was jacketed 158 gr hollow points. Later when I was allowed to, I used Winchester silvertip 145 grain loads.
When I was tuning actions for PPC guns almost no one was running stainless, so I didn,t have my hands on very many. As a firearms instructor, I did examine a lot of well used Md.19s and a lot of them were sent to the Dept. gunsmith for rebuild. These guns were the original runs from S&W during the 1950s for the federal gov. and were well used. I don,t think stainless is less durable than carbon steel unless an inferior quality stainless is used. There are as many types of stainless as there is carbon steel.