I own a S&W 629 which has a square butt N frame. When I purchased the gun it came with Pachmayer rubber grips with finger grooves. I'm like the OP, I just didn't like the feel of the rubber grips.
The gun didn't come with the original factory wood grips, after a bit EE searching I picked up a nice set of mid 80's grips, as I wanted the option of returning the gun to it's original form. When I installed the factory grips, I found they were a bit too large for my hands, plus I could no longer use a speed loader.
After a bit of reading/searching, I elected to order a set of JM smooth grips. As mentioned above, there was a slight gap between the frame and grip, but the gap was about the same as the factory fitment. Other than that, the grips look great, they fit my hands very well and out of the three sets of grips I have, I'll stay with the JM's, plus I can now use a speed loader.
WRH, I see you are located in Windsor, if you ever get close to Hamilton, you are welcome to meet up to see how they fit your hands. Just shoot me a pm if you are out this way.