I've got Hogue's on four Blackhawks. All are used for hunting and I find in damp weather or wearing gloves I can get a better grip with the rubber.
I put Hogue rubber grips on my Blackhawks, 357 and 45 Colt. I know it's sacriledge to a lot of people but, hey, their my guns. I think they would look terrible on a stainless gun ...
Mine are all stainless and the deer have never complained.
Also, I've never seen a set of Hogue's improve the looks of any revolver.