Way back in the day I was criticized by the head of my agency's FTU for decocking "too often" and "too soon". He wanted the decock to preceed holstering. Your hard break and scan and addressing additional targets should be SA. My answer was always "off target, hammer down." If I am going to start/restart "observe-decide-engage if necessary cycle ", paricularly if it involves moving, or going hands on or manipulating things in the environment like radios, doors, etc, I want the hammer down.
I have seen more than one ND when officers were climbing in windows, kicking doors, doing reloading drills etc. I very firmly believe and teach "off target, hammer down"...
Besides, everyone
knows that DA/SA triggers are harder to run, so I wanted more practice with the transition...
I have never believed TDA gave any additional margin of safety: when the trigger moves to the rear, a loud noise is the predictable result. I do recall, due to the nature, seeing the hammer move to the rear in my peripheral vision, before changing my mind, and getting off the trigger. I do buy that the process, depending on circumstances,
can allow one last opportunity to exit this ride.
This may be relevant to me in the future. If Gadgets are going to be hard to get I am eyeing the CZ P-07 for off duty appendix carry. Spent 6 years with a P229 in .40 and .357. 14 years with a Kimber Warrior that Uncle Pat helped me source, a year with an issue M&P9, and coming up on 2 years with a G17. I don't NEED a gadget to carry a Glock appendix, but I prefer it. The only reason I dropped the issue M&P was MOS, RMR, and Gadget, in that order. MOS no longer matters that much.
pat