I'll ditto CountryBoy on this one. I couldn't care less if it takes two hands to put the thing back ON. I want to be able to flick it OFF easily. And I can.
Also, consider the fact that bigger safeties PROBABLY mean more snag/fumble/accidental-switching potential. Probably. I'm unfamiliar with the C&S mod.
All added together, I am perfectly happy with my stock mkIII safety. It flicks off. It doesn't hang up on things. If it ain't broke, don't fix it.
Mike
PS the more I think about it, I LIKE the two-handed safety-on procedure. Very deliberate. Of course, for me it is an old habit from my very first pistol.
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"A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects." -Robert Heinlein