About 19 years ago I had a part time business in the UK and was for a short time the UK agent for Peters Stahl gmbh. The designer Joe Peters (you will remember the 'Multicalibre' sold in the US by Springfield Arms), is a stand up guy and an extremely good engineer, he did design a fully suppressed revolver and tested it at Bisley Camp. I remember it was based on the S&W 'L' frame and had a clam shell device that closed over the cylinder. Whatever happened to the concept I don't know, I thought it the time a wonderful piece of engineering for a concept that was going to go nowhere. Semi-auto's seem to be an easier choice for the job.
As for the subject in hand I still have my old service S&W M581 .357 calibre revolver, good round, not too heavy, simple and accurate with service sights.