I have a m36-7 circa 1991. Nice little carry piece and I left the original grips on it for ease of concealment. All of my other Smiths have either Altamonts or in the case of my 29-2, S&W combat grips. So I usually end up putting grips on that fit my hand better and that I like the looks of as well...but not the lil' 36
I find that my grip on it tends to naturally leave my pinky under the bottom of the grip. I have somewhat large hands but not like a gorilla. I don't find it unpleasant to shoot at all, it's a cupcake.
Another tip: If your 36 is anything like mine and my brother's, you may find that it shoots more accurately with lighter bullets. Never tried 158's in mine, but started at 140gr XTPs which were so-so. The went to 125gr Noslers which shot considerably tighter. I then made up a batch of 38's using 110gr XTP's and haven't yet gotten around to seeing how it does with those. So I have a few of those 125 grainers left that I use for carry.
Nice grab on a classic little snubby!