When I had a SBH I put packmyre(sp) on mine as I could not stand the factory grips or that terrible trigger guard. The factory grips were too small, and the trigger guard bloodied my fingers after 6 shots.
I put abut 100 rounds through the SBH with the factory grips. Even with big hands, I didn't have issues with the trigger guard, I just didn't like how it felt in my hands. I like the fuller grip the after market grips give you.