Who has them? I have a S&W 25-2 6',a 625-2 5" MODEL OF 1988(not 89), an old customized S&W 1917 .45acp revolver, a Ruger speed six 9x19 ss 2 3/4", and a S&W 940 2" 9x19.
I sold off 2 Colt 1917 with period customizing.
I like the concept with the fast reload the moonclips offer and other advantages of the system,many casual shooters dislike fiddling with the clips though.
I'd like to get a S&W 610 pre lock with the unfluted cylinder. And the .38super 8 shot would be neat but I hate new S&W's with the lock.
S&W did make the 547 which did not need moonclips. And the Ruger single actions in .45acp,9x19,10mm,and the Vaquero single action in .40 would be fun to own and do not need moonclips.
I'd like the Ruger service six in 9mm as well. Astra made some revolvers like this too as did some other Euro manufacturers.