Hi Scott, I too am a lefty shooter and have a CZ TSO that has that pesky extended safety that kind of digs into my left hand.
Would you let me know if you were able to flip the safety to extend out from the R side of the TSO using the left handed Shadow2 safety? I'm hoping to buy the parts and wasn't sure what George16 meant by "...make sure you use the whole set (left and right parts)."