On the topic of P-02 interchangeable safety and decocker. I purchased my P-02 with the expectation that the hardware exists to change between the two (see user manual).
I contacted CZ-USA, and CZ Custom. What I found is that the P-02 is indeed capable of being swapped as either safety or decocker but until either CZ-UB or CZ-USA decides to make some nice metal decocker kits you are pretty much stuck with safety only. There are P-02 decocker models out there per some forum posters but I am guessing they are few and far between.
As to using the P-07/09 decocker in a P-02, I read it has been tried and is too short to accommodate the additional width of the P-02.
Wish I had better news. Drop CZ-USA a line and tell them you would like a decocker kit for the P-02. It couldn't hurt.
Cheers.