This works for me
Years ago, Safariland made finger groove grips with an open backstrap for J, K and N frame Smiths. They were available in black and a "look like" wood. Not rubber. They are made of some kind of composite and dull in the black and shiny in the "look like" wood. The J frame had grooves for 3 fingers and went below the frame. I saw a picture of them cut down in a gun magazine 20 years ago. I ordered 3 sets, 2 in black and one in "look like" wood. I took them to a gunsmith and he cut one finger groove off. They still extended just beyond the frame. The black ones are on a 640 (38) and a 442 Nickel, no dash and no lock. I wanted the same grip on both so either would feel the same and the black looks great on the stainless and nickel guns. I still had the "look like" wood when I got my 340 PD. I took the 340 and the grips to King's Gun Works in Glendale CA and had the gunsmith cut them flush with the bottom of the frame. I have found nothing better for pocket carry and they look great in contrast to the black finish on the 340. They don't stick to anything, like rubber does and the finger grooves give you something to hold on to. This way, I have 3 J frames that index in my hand the same way. They are also cleared for speedloaders. Safariland no longer makes these grips, but you might find some at a gun show. They look like the old Hogue grip, but are a 2 piece versus the Hogues that was a one piece and attached with a stirrup at the bottom. If I had a digital camera, I would post a picture, but I don't have one. Good luck finding them...you'll love them if you do.
Another option...if you call Hogue, they make the Bantam grip in wood, but it's thicker than their rubber Bantam. I tried it. For more money, they will shave their wood Bantams down so they're the same dimensions as their rubber ones. If I remember right, they said the shaved grip would cost $100.
coach22
