I think you're asking a lot of a jacket pocket to carry a L- or N-frame. Have you tried this already?

Maybe something like a Ruger SP101 loaded with heavy .357 Magnum rounds, like those made by Buffalo Bore, would be more pocketable.

If you still want to go the L/N-frame pocket route, you may want to check out Remora holsters. They sell sticky-type holsters that can be worn IWB without a clip that can also serve as a pocket holster. I have one for my Beretta 92FS and one on order for my 5" 1911 (I use them as nightstand holsters, not for carry), so they may make one big enough for your guns of choice. I also think the L-frame would be better suited for pocket carry than an N-frame, though neither would be "ideal."

Just my opinion.

Best of luck to you in your search.