Some really good insight from those that have had both or currently have both types. I have the rubberized ones on my Shield and really like it. Sorry to say I can't speak to the granular. But when friends and family shoot my Shield they love rubberized Talon grips I have on it. I like that I don't feel it on my skin as I carry IWB. That for me was what sealed the deal.

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M&P FS 9mm
M&P Shield 9mm