Owned the pistol for over 3 years, bought it NIB, never had to change/alter/modify my grip. Grip safety is very easy, and has never been a concern or issue.
Too many variables, from
"someone" having to grip harder to activate. Most of that was pre-2005 production, and has long been resolved by S&W. Per Coptalk forums:
Jan 2004. Massad Ayoob.
http://findarticles.com/p/articles/mi_m0BTT/is_167_28/ai_110457309/ Cocked and locked .45s are still found in police holsters in Denver, Las Vegas, and a host of smaller PDs. S&W's new one takes regular 1911 magazines, and is made up of the best 1911 after-market parts on an in-house frame and slide. Though they're assembled at the moment by the master pistolsmiths of the Performance Center, price is equivalent to entry-level Kimber and Springfield Armory guns similarly configured.
The grip safety operates the passive firing pin safety that drop-safes the pistol, though on a different principle than the old Swartz parent of Colt's that Nehemiah Skids revitalized for the Kimber 11 series. I had a little trouble making the grip safety work, but most people didn't, and it's being tweaked at the factory anyway. I'm authorized to carry a drop-safe 1911 on duty, and look forward to testing the S&W 1911 in the field. Recently--and prematurely buried next to Colt in the cemetery of guns that fell out of favor with police departments--Smith & Wesson is climbing out of the grave.
As far as the law enforcement market, S&W is "back from the dead and ready to party."That's also why I have a full size M+P .40.

Please do not remove any safeties. It can burn you in court, let alone cause a AD or ND.