S&W 640-1 wearing big ole thick (likely aftermarket) hand filling grips, and on the right is a S&W 60-9 adorned with what I believe to be factory combat-style grips (although they are not marked as such, I believe S&W sourced grips from Uncle Mike's for a while).
The grips on the left are okay for shooting but they are (for my taste) marginal for IWB and shoulder carry; they really suck for pocket carry. The grips on the right make that revolver substantially more agreeable for IWB, shoulder, and pocket carry; I decided to seek a match of those grips so I could put them on the 640-1.
Craig Spegel style boot grips. I find the boot grips to be just downright wonderful for J Frames stoked with .38 Special cartridges but not much fun with any flavor of the .357 magnum loads.
640-1 round-butt J Frame.
640-1 are not an exact match to those that are on the 60-9, I believe they will work out just fine and dandy; holster-time and range-time will tell the final tale.