Walther has been making guns with decockers since what, the PP in 1929?
It's safe. As safe as carrying a gun. As safe as YOU make it.
Faulty equipment? Sure. But that's why you never point the gun at something you are not willing to destroy.
The striker's not going to hit the primer unless the trigger bar is moved rearward.
So, as long as your booger hook doesn't press the boom switch, you're good to go.
I know that I will run the risk of starting a war by saying this, but...
Condition 3 carry, or Israeli Carry, or whatever you want to call it, is dangerous - to you. I know, that's what the US Army taught for years with 1911s. But hell, we also used to carry revolvers on an empy chamber too. BTW, as far as I know, the current accepted method for the military and the M9 is chamber loaded and decocked.
I think you are really cutting your chances of survivablity by carrying your handgun in condition 3.
So much can happen to you. Just think about this scenario:
You're in Condition Yellow (aware of your surroundings)
But, you miss something (or more likely, ignore one of your gut feelings - I say that because I've done it before).
So all of a sudden, your at bad breath distance with a bad guy.
Now, you've got to fend off a dude with your weak hand while...
drawing your pistol from concealment - which may take two hands if you're running IWB with a covering garment.
And now, you have to take that free hand off your opponent and rack the slide?
Another one. Ever heard of the Tueler drill?
Basically, Tueler figured out:
That a man (with a knife - club - or cream pie) can close on someone in approximately the same amount of time that it takes for someone to draw and fire a weapon. The magic distance is 7 yards.
I've seen it with my own eyes at a threat management class.
One instructor closed on the chief insturctor (a police officer) from 21 feet away. The chief instructor had just cleared leather with his Glock 19 when the "bad guy" "stabbed" him in the neck.
Please, do yourself a favor and get comfortable with that pistol. Decock it in a safe direction (it should ALWAYS be pointed in a safe direction anyway). Holster it and live a good long time.