I carried a Colt Combat Commander for 20 plus years. On and off duty for a couple of years and then off duty for about 3 more years and then after I left LE it was still my concealed carry pistol for awhile (then I got what I'd wanted for years a stainless steel Colt Government Model - it was a Series 80, but I bought it because it was SS and the price was incredible). Never any issues.
I was carrying my Pre B CZ85 around my property for awhile and then I made a CZ75 Compact into a CZ85 Compact/clone and carried it for a couple years. I don't remember worrying about the Pre B not having a firing pin block.
A carry gun shouldn't have a true "hair" trigger. I would never carry my Tactical Sport with it's less than 2 lb. trigger pull. It's scary light.
As to lack of a firing pin block safety with SA/DA pistol -
1. What does a firing pin block safety do? It blocks forward movement of the firing pin unless the trigger has been pulled.
2. When you have the pistol in a good holster, how can the trigger be pulled?
3. If you are carrying a SA/DA pistol (like the Pre B CZ75/85) you're carrying it cocked and locked, right? If not, why not just get a BD model? It's designed the way you want to operate. The B model really isn't. You can do it with a B model, but why?
4. The favorite of the "in" crowd these days is the Glock.
5. The Glock has a striker block safety that keeps the striker from moving forward unless you pull the trigger. Sort of sound like the B or BD model CZ's, doesn't it.
6. The Glock's only manual safety is that little piece of plastic in the center of the trigger, so you have to be careful when putting it in the holster or handling it. Again, sounds like a CZ.
Anyone who would carry a Glock, an M&P, an XD, an FN - any of the striker fired pistols has the same issues you have carrying the CZ - except you have an additional manual safety that you should be putting in the safe position before you holster it.
Just my opinion but I don't carry/shoot decocker pistols. I do carry an XD 5" Tactical .45 - but it's one of those rare models with the ambidextrous thumb safeties - like my 1911's and my Pre B CZ85/CZ85 clone compact, P07, etc.
That's something else I don't do, switch around from gun to gun with some of them having a different manual of arms than the others. Not a good idea. I can't tell you how many times my right finger dropped the magazine out of an AR15 when I first switched over from the M1A to the AR15. I know the M1A/M1 Garand safety moves forward/rearward and the AR15 magazine release is pushed to the left - but my right finger would move up there to the magazine release and drop that magazine right on the bench, on the ground and I'd hear a funny noise, look down and think, what the hell??? Then my mind would recall that I'd just done it again. I bought a GII. Now I can have the 7.62X51 or the 5.56X39 and operate the same. Might just be me.