The whole RDS on a pistol movement means nothing to me, and I'll explain why.
I'm of the belief that I either have to have them on all of my pistols, or none of my pistols. Since my employer says no RDS on our duty or off duty guns, they have made the decision for me. I'm ok with that. I'm sure it would be expensive putting them on all of my handguns and it would make my Glock 42 and 442 j frame look kinda funny.
You should definitely put one on the J frame. That would be hilarious.