Originally Posted by PirateJim

I agree with RobzGuns. I disengage the safety when the gun is holstered so it's ready to go if needed. The safety lever is small enough and stiff enough it will not be re-engaged by accident. When I'm not carrying the gun, I engage the safety for that added bit of comfort.

Bottom line (from my perspective): You don't need it, but you may well find there are times you like having it. If you choose to carry the gun with the safety engaged, practice with it regularly to make sure you can disengage it under pressure, it doesn't fall under the thumb like a lot of other safety levers do.