As a long, long time shooter (since 1952) and former LEO, I have a couple of revolvers that I shoot. It is no longer true that revolvers are more reliable than semi-autos (I'm sure we will start a flame war on this). From my first LE job in 1962, I have never carried one for duty and only on the rare occasion for CCW. Any one of my several semi-autos (from an AMT to any of my 1911's and Glock 23) presents a more formidable and equally (or more) reliable package than any revolver. Yes, some of those super light weights are almost handy (still thicker through the cylinder than almost any auto), but in any significant caliber, are unpleasant to shoot enough to become really proficient with it.
I do have a (all stainless steel) S&W 640 .357Mag and it is a handfull.
ETA: I have carry autos .380ACP (carry only on those really hot humid days), 9m/m, .357SIG, .40S&W and .45ACP. The ONLY (IMHO) relvolver round worth a crap is the .357Mag and now we are back to the size/weight does make a difference.