Got my P07 DUTY .40 S&W back in about 2012 or 2013, maybe. Carried it as it came out of the box for a couple years and then got the slide milled for a Trijicon and back up iron sight. Been carrying like that, except for replacing a worn out Trijicon with a Holosun, ever since. Year round, no matter how hot/muggy or cold it is. It's my concealed carry gun. I do carry a different gun when I open carry around my yard, garage, back lot, etc.
No failures at the range. I only shoot my reloads in it. So far, while testing other brands of pistols with different ammo I've not found any store bought ammo that shoots like my reloads.
How much do I like it? For fear of it maybe breaking beyond my ability to replace it with a current made P07 .40 (since CZ quit making them) I bought another old DUTY .40 S&W P07 last year to put away for insurance.
Only parts I replaced (not for failures but for insurance against failures) are the addition of CGW reduced power trigger return spring, reduced power firing pin block spring and firing pin retaining pin.